156401684544 has 112 divisors (see below), whose sum is σ = 489236918400. Its totient is φ = 43145281536.

The previous prime is 156401684503. The next prime is 156401684563. The reversal of 156401684544 is 445486104651.

It is a tau number, because it is divible by the number of its divisors (112).

It is a super-2 number, since 2×156401684544² (a number of 23 digits) contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 156401684493 and 156401684502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1967409 + ... + 2045360.

Almost surely, 2^156401684544 is an apocalyptic number.

156401684544 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

156401684544 is an abundant number, since it is smaller than the sum of its proper divisors (332835233856).

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

156401684544 is a wasteful number, since it uses less digits than its factorization.

156401684544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4012820 (or 4012810 counting only the distinct ones).

The product of its (nonzero) digits is 1843200, while the sum is 48.

The spelling of 156401684544 in words is "one hundred fifty-six billion, four hundred one million, six hundred eighty-four thousand, five hundred forty-four".