72106311694 has 16 divisors (see below), whose sum is σ = 108327143232. Its totient is φ = 35997308928.

The previous prime is 72106311677. The next prime is 72106311709. The reversal of 72106311694 is 49611360127.

It is a super-2 number, since 2×72106311694² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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, 3640522 + ... + 3660274.

It is an arithmetic number, because the mean of its divisors is an integer number (6770446452).

Almost surely, 2^72106311694 is an apocalyptic number.

72106311694 is a deficient number, since it is larger than the sum of its proper divisors (36220831538).

72106311694 is a wasteful number, since it uses less digits than its factorization.

72106311694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22491.

The product of its (nonzero) digits is 54432, while the sum is 40.

The spelling of 72106311694 in words is "seventy-two billion, one hundred six million, three hundred eleven thousand, six hundred ninety-four".