72644043115656 has 48 divisors (see below), whose sum is σ = 197385144356400. Its totient is φ = 24135805848672.

The previous prime is 72644043115627. The next prime is 72644043115673. The reversal of 72644043115656 is 65651134044627.

72644043115656 is a `hidden beast` number, since 7 + 2 + 6 + 4 + 4 + 0 + 431 + 156 + 56 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1643210866 + ... + 1643255073.

It is an arithmetic number, because the mean of its divisors is an integer number (4112190507425).

Almost surely, 2^{72644043115656} is an apocalyptic number.

It is an amenable number.

72644043115656 is an abundant number, since it is smaller than the sum of its proper divisors (124741101240744).

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

72644043115656 is a wasteful number, since it uses less digits than its factorization.

72644043115656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3286466258 (or 3286466251 counting only the distinct ones).

The product of its (nonzero) digits is 14515200, while the sum is 54.

The spelling of 72644043115656 in words is "seventy-two trillion, six hundred forty-four billion, forty-three million, one hundred fifteen thousand, six hundred fifty-six".