156131461261920 has 96 divisors (see below), whose sum is σ = 493492649846112. Its totient is φ = 41492957130752.

The previous prime is 156131461261913. The next prime is 156131461262069. The reversal of 156131461261920 is 29162164131651.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 156131461261920.

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, 554934237 + ... + 555215516.

It is an arithmetic number, because the mean of its divisors is an integer number (5140548435897).

Almost surely, 2^{156131461261920} is an apocalyptic number.

156131461261920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

156131461261920 is an abundant number, since it is smaller than the sum of its proper divisors (337361188584192).

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

156131461261920 is a wasteful number, since it uses less digits than its factorization.

156131461261920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110150064 (or 1110150056 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 48.

The spelling of 156131461261920 in words is "one hundred fifty-six trillion, one hundred thirty-one billion, four hundred sixty-one million, two hundred sixty-one thousand, nine hundred twenty".