72651156400 has 60 divisors (see below), whose sum is σ = 174594818272. Its totient is φ = 29052069120.

The previous prime is 72651156377. The next prime is 72651156407. The reversal of 72651156400 is 465115627.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 72651156400.

It is not an unprimeable number, because it can be changed into a prime (72651156407) by changing a digit.

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, 1466434 + ... + 1515166.

Almost surely, 2^72651156400 is an apocalyptic number.

It is an amenable number.

72651156400 is an abundant number, since it is smaller than the sum of its proper divisors (101943661872).

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

72651156400 is a wasteful number, since it uses less digits than its factorization.

72651156400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52478 (or 52467 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 37.

The spelling of 72651156400 in words is "seventy-two billion, six hundred fifty-one million, one hundred fifty-six thousand, four hundred".