90072355667 has 16 divisors (see below), whose sum is σ = 105833218752. Its totient is φ = 75039229440.

The previous prime is 90072355663. The next prime is 90072355693. The reversal of 90072355667 is 76655327009.

It is not a de Polignac number, because 90072355667 - 2² = 90072355663 is a prime.

It is a super-2 number, since 2×90072355667² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90072355663) 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, 64367 + ... + 429287.

It is an arithmetic number, because the mean of its divisors is an integer number (6614576172).

Almost surely, 2^90072355667 is an apocalyptic number.

90072355667 is a deficient number, since it is larger than the sum of its proper divisors (15760863085).

90072355667 is a wasteful number, since it uses less digits than its factorization.

90072355667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365918.

The product of its (nonzero) digits is 2381400, while the sum is 50.

The spelling of 90072355667 in words is "ninety billion, seventy-two million, three hundred fifty-five thousand, six hundred sixty-seven".