156365531420 has 48 divisors (see below), whose sum is σ = 376283506368. Its totient is φ = 53467292160.

The previous prime is 156365531411. The next prime is 156365531467. The reversal of 156365531420 is 24135563651.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1444961 + ... + 1549400.

It is an arithmetic number, because the mean of its divisors is an integer number (7839239716).

Almost surely, 2^156365531420 is an apocalyptic number.

156365531420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

156365531420 is an abundant number, since it is smaller than the sum of its proper divisors (219917974948).

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

156365531420 is a wasteful number, since it uses less digits than its factorization.

156365531420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2994750 (or 2994748 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 41.

The spelling of 156365531420 in words is "one hundred fifty-six billion, three hundred sixty-five million, five hundred thirty-one thousand, four hundred twenty".