72785165002 has 32 divisors (see below), whose sum is σ = 126001728000. Its totient is φ = 31185356400.

The previous prime is 72785164997. The next prime is 72785165003. The reversal of 72785165002 is 20056158727.

It is a self number, because there is not a number n which added to its sum of digits gives 72785165002.

It is not an unprimeable number, because it can be changed into a prime (72785165003) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 354324 + ... + 520687.

It is an arithmetic number, because the mean of its divisors is an integer number (3937554000).

Almost surely, 2^72785165002 is an apocalyptic number.

72785165002 is a deficient number, since it is larger than the sum of its proper divisors (53216562998).

72785165002 is a wasteful number, since it uses less digits than its factorization.

72785165002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875242.

The product of its (nonzero) digits is 235200, while the sum is 43.

The spelling of 72785165002 in words is "seventy-two billion, seven hundred eighty-five million, one hundred sixty-five thousand, two".