90816178801 has 4 divisors (see below), whose sum is σ = 90836068672. Its totient is φ = 90796288932.

The previous prime is 90816178793. The next prime is 90816178813. The reversal of 90816178801 is 10887161809.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 90816178801 - 2³ = 90816178793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90816170801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9938085 + ... + 9947218.

It is an arithmetic number, because the mean of its divisors is an integer number (22709017168).

Almost surely, 2^90816178801 is an apocalyptic number.

It is an amenable number.

90816178801 is a deficient number, since it is larger than the sum of its proper divisors (19889871).

90816178801 is a wasteful number, since it uses less digits than its factorization.

90816178801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19889870.

The product of its (nonzero) digits is 193536, while the sum is 49.

The spelling of 90816178801 in words is "ninety billion, eight hundred sixteen million, one hundred seventy-eight thousand, eight hundred one".