72166722201016 has 16 divisors (see below), whose sum is σ = 139978555993800. Its totient is φ = 34839107269344.

The previous prime is 72166722200941. The next prime is 72166722201061. The reversal of 72166722201016 is 61010222766127.

It is a super-2 number, since 2×72166722201016² (a number of 29 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 3 ways as a sum of consecutive naturals, for example, 155531728650 + ... + 155531729113.

Almost surely, 2^{72166722201016} is an apocalyptic number.

It is an amenable number.

72166722201016 is a deficient number, since it is larger than the sum of its proper divisors (67811833792784).

72166722201016 is a wasteful number, since it uses less digits than its factorization.

72166722201016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311063457798 (or 311063457794 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 43.

The spelling of 72166722201016 in words is "seventy-two trillion, one hundred sixty-six billion, seven hundred twenty-two million, two hundred one thousand, sixteen".