72146656562 has 16 divisors (see below), whose sum is σ = 114087785472. Its totient is φ = 34166912160.

The previous prime is 72146656537. The next prime is 72146656583. The reversal of 72146656562 is 26565664127.

It is a self number, because there is not a number n which added to its sum of digits gives 72146656562.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12376403 + ... + 12382230.

It is an arithmetic number, because the mean of its divisors is an integer number (7130486592).

Almost surely, 2^72146656562 is an apocalyptic number.

72146656562 is a deficient number, since it is larger than the sum of its proper divisors (41941128910).

72146656562 is a wasteful number, since it uses less digits than its factorization.

72146656562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24758713.

The product of its digits is 3628800, while the sum is 50.

It can be divided in two parts, 7214665 and 6562, that added together give a palindrome (7221227).

The spelling of 72146656562 in words is "seventy-two billion, one hundred forty-six million, six hundred fifty-six thousand, five hundred sixty-two".