156420956880 has 60 divisors (see below), whose sum is σ = 525313715940. Its totient is φ = 41712254976.

The previous prime is 156420956843. The next prime is 156420956891. The reversal of 156420956880 is 88659024651.

156420956880 is a `hidden beast` number, since 1 + 56 + 4 + 20 + 9 + 568 + 8 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 70471135296 + 85949821584 = 265464^2 + 293172^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 108624945 + ... + 108626384.

It is an arithmetic number, because the mean of its divisors is an integer number (8755228599).

Almost surely, 2^156420956880 is an apocalyptic number.

156420956880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

156420956880 is an abundant number, since it is smaller than the sum of its proper divisors (368892759060).

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

156420956880 is a wasteful number, since it uses less digits than its factorization.

156420956880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217251348 (or 217251339 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 54.

The spelling of 156420956880 in words is "one hundred fifty-six billion, four hundred twenty million, nine hundred fifty-six thousand, eight hundred eighty".