72665554730 has 16 divisors (see below), whose sum is σ = 130801275360. Its totient is φ = 29065493712.

The previous prime is 72665554727. The next prime is 72665554831. The reversal of 72665554730 is 3745556627.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 529601 + ... + 652539.

It is an arithmetic number, because the mean of its divisors is an integer number (8175079710).

Almost surely, 2^72665554730 is an apocalyptic number.

72665554730 is a deficient number, since it is larger than the sum of its proper divisors (58135720630).

72665554730 is a wasteful number, since it uses less digits than its factorization.

72665554730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182053.

The product of its (nonzero) digits is 5292000, while the sum is 50.

The spelling of 72665554730 in words is "seventy-two billion, six hundred sixty-five million, five hundred fifty-four thousand, seven hundred thirty".