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1145655544609 = 409226172
BaseRepresentation
bin10000101010111110011…
…001000100101100100001
311001112010201000201221101
4100222332121010230201
5122232300304411414
62234150142154401
7145525261311412
oct20527631045441
94045121021841
101145655544609
11401962762444
12166051882a01
138405b762024
143d642c1b809
151ec03c2ea74
hex10abe644b21

1145655544609 has 9 divisors (see below), whose sum is σ = 1148902522137. Its totient is φ = 1142417726784.

The previous prime is 1145655544597. The next prime is 1145655544699. The reversal of 1145655544609 is 9064455565411.

The square root of 1145655544609 is 1070353.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 925011150625 + 220644393984 = 961775^2 + 469728^2 .

It is not a de Polignac number, because 1145655544609 - 25 = 1145655544577 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1145655544609.

It is not an unprimeable number, because it can be changed into a prime (1145655544699) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 437773069 + ... + 437775685.

It is an arithmetic number, because the mean of its divisors is an integer number (127655835793).

Almost surely, 21145655544609 is an apocalyptic number.

1145655544609 is the 1070353-rd square number.

1145655544609 is the 535177-th centered octagonal number.

It is an amenable number.

1145655544609 is a deficient number, since it is larger than the sum of its proper divisors (3246977528).

1145655544609 is an frugal number, since it uses more digits than its factorization.

1145655544609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6052 (or 3026 counting only the distinct ones).

The product of its (nonzero) digits is 12960000, while the sum is 55.

The spelling of 1145655544609 in words is "one trillion, one hundred forty-five billion, six hundred fifty-five million, five hundred forty-four thousand, six hundred nine".

Divisors: 1 409 2617 167281 1070353 6848689 437774377 2801113801 1145655544609