1550514505545 has 48 divisors (see below), whose sum is σ = 2702160723600. Its totient is φ = 822459875328.

The previous prime is 1550514505517. The next prime is 1550514505549. The reversal of 1550514505545 is 5455054150551.

1550514505545 is a `hidden beast` number, since 1 + 5 + 5 + 0 + 51 + 4 + 50 + 5 + 545 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 466908456249 + 1083606049296 = 683307^2 + 1040964^2 .

It is not a de Polignac number, because 1550514505545 - 2⁷ = 1550514505417 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1550514505545.

It is not an unprimeable number, because it can be changed into a prime (1550514505549) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6201579 + ... + 6446751.

It is an arithmetic number, because the mean of its divisors is an integer number (56295015075).

Almost surely, 2^{1550514505545} is an apocalyptic number.

1550514505545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1550514505545 is a deficient number, since it is larger than the sum of its proper divisors (1151646218055).

1550514505545 is a wasteful number, since it uses less digits than its factorization.

1550514505545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245946 (or 245943 counting only the distinct ones).

The product of its (nonzero) digits is 1250000, while the sum is 45.

The spelling of 1550514505545 in words is "one trillion, five hundred fifty billion, five hundred fourteen million, five hundred five thousand, five hundred forty-five".