72566652678 has 64 divisors (see below), whose sum is σ = 163130853312. Its totient is φ = 21372549120.

The previous prime is 72566652649. The next prime is 72566652679. The reversal of 72566652678 is 87625666527.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72566652679) 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 31 ways as a sum of consecutive naturals, for example, 44575 + ... + 383562.

It is an arithmetic number, because the mean of its divisors is an integer number (2548919583).

Almost surely, 2^72566652678 is an apocalyptic number.

72566652678 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

72566652678 is an abundant number, since it is smaller than the sum of its proper divisors (90564200634).

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

72566652678 is a wasteful number, since it uses less digits than its factorization.

72566652678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428249.

The product of its digits is 50803200, while the sum is 60.

The spelling of 72566652678 in words is "seventy-two billion, five hundred sixty-six million, six hundred fifty-two thousand, six hundred seventy-eight".