156020645538 has 12 divisors (see below), whose sum is σ = 338044732038. Its totient is φ = 52006881840.

The previous prime is 156020645533. The next prime is 156020645579. The reversal of 156020645538 is 835546020651.

156020645538 is a `hidden beast` number, since 1 + 5 + 602 + 0 + 6 + 4 + 5 + 5 + 38 = 666.

It can be written as a sum of positive squares in only one way, i.e., 135627948729 + 20392696809 = 368277^2 + 142803^2 .

It is a junction number, because it is equal to n+sod(n) for n = 156020645493 and 156020645502.

It is not an unprimeable number, because it can be changed into a prime (156020645533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4333906803 + ... + 4333906838.

Almost surely, 2^156020645538 is an apocalyptic number.

156020645538 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

156020645538 is an abundant number, since it is smaller than the sum of its proper divisors (182024086500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

156020645538 is a wasteful number, since it uses less digits than its factorization.

156020645538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8667813649 (or 8667813646 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 45.

The spelling of 156020645538 in words is "one hundred fifty-six billion, twenty million, six hundred forty-five thousand, five hundred thirty-eight".