156427635640 has 32 divisors (see below), whose sum is σ = 355251556080. Its totient is φ = 61986276352.

The previous prime is 156427635599. The next prime is 156427635691. The reversal of 156427635640 is 46536724651.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18269977 + ... + 18278536.

Almost surely, 2^156427635640 is an apocalyptic number.

156427635640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

156427635640 is an abundant number, since it is smaller than the sum of its proper divisors (198823920440).

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

156427635640 is a wasteful number, since it uses less digits than its factorization.

156427635640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36548631 (or 36548627 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 49.

The spelling of 156427635640 in words is "one hundred fifty-six billion, four hundred twenty-seven million, six hundred thirty-five thousand, six hundred forty".