1155407860201 has 9 divisors (see below), whose sum is σ = 1344054630999. Its totient is φ = 990343145064.

The previous prime is 1155407860193. The next prime is 1155407860219. The reversal of 1155407860201 is 1020687045511.

The square root of 1155407860201 is 1074899.

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

It can be written as a sum of positive squares in only one way, i.e., 1135151739225 + 20256120976 = 1065435^2 + 142324^2 .

It is not a de Polignac number, because 1155407860201 - 2³ = 1155407860193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1155407860231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 7447515 + ... + 7601071.

Almost surely, 2^{1155407860201} is an apocalyptic number.

1155407860201 is the 1074899-th square number.

1155407860201 is the 537450-th centered octagonal number.

It is an amenable number.

1155407860201 is a deficient number, since it is larger than the sum of its proper divisors (188646770798).

1155407860201 is an frugal number, since it uses more digits than its factorization.

1155407860201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307128 (or 153564 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 40.

The spelling of 1155407860201 in words is "one trillion, one hundred fifty-five billion, four hundred seven million, eight hundred sixty thousand, two hundred one".