72702475105 has 64 divisors (see below), whose sum is σ = 98553692160. Its totient is φ = 51138936576.

The previous prime is 72702475099. The next prime is 72702475151. The reversal of 72702475105 is 50157420727.

It is a de Polignac number, because none of the positive numbers 2^k-72702475105 is a prime.

It is a super-2 number, since 2×72702475105² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 18324832 + ... + 18328798.

It is an arithmetic number, because the mean of its divisors is an integer number (1539901440).

Almost surely, 2^72702475105 is an apocalyptic number.

It is an amenable number.

72702475105 is a deficient number, since it is larger than the sum of its proper divisors (25851217055).

72702475105 is a wasteful number, since it uses less digits than its factorization.

72702475105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4190.

The product of its (nonzero) digits is 137200, while the sum is 40.

The spelling of 72702475105 in words is "seventy-two billion, seven hundred two million, four hundred seventy-five thousand, one hundred five".