72566623371 has 16 divisors (see below), whose sum is σ = 107340462720. Its totient is φ = 43234350720.

The previous prime is 72566623273. The next prime is 72566623403. The reversal of 72566623371 is 17332666527.

It is not a de Polignac number, because 72566623371 - 2¹³ = 72566615179 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72566623371.

It is not an unprimeable number, because it can be changed into a prime (72566623771) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18633550 + ... + 18637443.

It is an arithmetic number, because the mean of its divisors is an integer number (6708778920).

Almost surely, 2^72566623371 is an apocalyptic number.

72566623371 is a deficient number, since it is larger than the sum of its proper divisors (34773839349).

72566623371 is a wasteful number, since it uses less digits than its factorization.

72566623371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37271066.

The product of its digits is 1905120, while the sum is 48.

The spelling of 72566623371 in words is "seventy-two billion, five hundred sixty-six million, six hundred twenty-three thousand, three hundred seventy-one".