156988383680 has 28 divisors (see below), whose sum is σ = 373828589400. Its totient is φ = 62795353344.

The previous prime is 156988383661. The next prime is 156988383691. The reversal of 156988383680 is 86383889651.

It is a super-2 number, since 2×156988383680² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (65) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 245294030 + ... + 245294669.

It is an arithmetic number, because the mean of its divisors is an integer number (13351021050).

Almost surely, 2^156988383680 is an apocalyptic number.

156988383680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

156988383680 is an abundant number, since it is smaller than the sum of its proper divisors (216840205720).

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

156988383680 is an equidigital number, since it uses as much as digits as its factorization.

156988383680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490588716 (or 490588706 counting only the distinct ones).

The product of its (nonzero) digits is 59719680, while the sum is 65.

The spelling of 156988383680 in words is "one hundred fifty-six billion, nine hundred eighty-eight million, three hundred eighty-three thousand, six hundred eighty".