90816155788 has 6 divisors (see below), whose sum is σ = 158928272636. Its totient is φ = 45408077892.

The previous prime is 90816155783. The next prime is 90816155809. The reversal of 90816155788 is 88755161809.

It is a super-2 number, since 2×90816155788² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90816155783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11352019470 + ... + 11352019477.

Almost surely, 2^90816155788 is an apocalyptic number.

It is an amenable number.

90816155788 is a deficient number, since it is larger than the sum of its proper divisors (68112116848).

90816155788 is a wasteful number, since it uses less digits than its factorization.

90816155788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22704038951 (or 22704038949 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 58.

The spelling of 90816155788 in words is "ninety billion, eight hundred sixteen million, one hundred fifty-five thousand, seven hundred eighty-eight".