65622715880 has 32 divisors (see below), whose sum is σ = 154070726400. Its totient is φ = 25107821376.

The previous prime is 65622715877. The next prime is 65622715883. The reversal of 65622715880 is 8851722656.

It is an interprime number because it is at equal distance from previous prime (65622715877) and next prime (65622715883).

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (65622715883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35663600 + ... + 35665439.

It is an arithmetic number, because the mean of its divisors is an integer number (4814710200).

Almost surely, 2^65622715880 is an apocalyptic number.

It is an amenable number.

65622715880 is an abundant number, since it is smaller than the sum of its proper divisors (88448010520).

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

65622715880 is a wasteful number, since it uses less digits than its factorization.

65622715880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71329073 (or 71329069 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 50.

The spelling of 65622715880 in words is "sixty-five billion, six hundred twenty-two million, seven hundred fifteen thousand, eight hundred eighty".