90666671804 has 6 divisors (see below), whose sum is σ = 158666675664. Its totient is φ = 45333335900.

The previous prime is 90666671791. The next prime is 90666671827. The reversal of 90666671804 is 40817666609.

It is a super-2 number, since 2×90666671804² (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 as a sum of consecutive naturals, namely, 11333333972 + ... + 11333333979.

It is an arithmetic number, because the mean of its divisors is an integer number (26444445944).

Almost surely, 2^90666671804 is an apocalyptic number.

It is an amenable number.

90666671804 is a deficient number, since it is larger than the sum of its proper divisors (68000003860).

90666671804 is a wasteful number, since it uses less digits than its factorization.

90666671804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22666667955 (or 22666667953 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 53.

The spelling of 90666671804 in words is "ninety billion, six hundred sixty-six million, six hundred seventy-one thousand, eight hundred four".