72603649860 has 72 divisors (see below), whose sum is σ = 236480469120. Its totient is φ = 16595119296.

The previous prime is 72603649849. The next prime is 72603649873. The reversal of 72603649860 is 6894630627.

It is a happy number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 12344620 + ... + 12350499.

It is an arithmetic number, because the mean of its divisors is an integer number (3284450960).

Almost surely, 2^72603649860 is an apocalyptic number.

72603649860 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

72603649860 is an abundant number, since it is smaller than the sum of its proper divisors (163876819260).

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

72603649860 is a wasteful number, since it uses less digits than its factorization.

72603649860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24695145 (or 24695136 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 51.

The spelling of 72603649860 in words is "seventy-two billion, six hundred three million, six hundred forty-nine thousand, eight hundred sixty".