156932445609 has 9 divisors (see below), whose sum is σ = 226681915863. Its totient is φ = 104620838112.

The previous prime is 156932445601. The next prime is 156932445611. The reversal of 156932445609 is 906544239651.

The square root of 156932445609 is 396147.

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

156932445609 is a `hidden beast` number, since 1 + 5 + 6 + 9 + 3 + 24 + 4 + 5 + 609 = 666.

It can be written as a sum of positive squares in only one way, i.e., 95943204009 + 60989241600 = 309747^2 + 246960^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 156932445609 - 2³ = 156932445601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (156932445601) 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, 1122417 + ... + 1254465.

Almost surely, 2^156932445609 is an apocalyptic number.

156932445609 is the 396147-th square number.

156932445609 is the 198074-th centered octagonal number.

It is an amenable number.

156932445609 is a deficient number, since it is larger than the sum of its proper divisors (69749470254).

156932445609 is an frugal number, since it uses more digits than its factorization.

156932445609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264104 (or 132052 counting only the distinct ones).

The product of its (nonzero) digits is 6998400, while the sum is 54.

The spelling of 156932445609 in words is "one hundred fifty-six billion, nine hundred thirty-two million, four hundred forty-five thousand, six hundred nine".