90765159165166 has 4 divisors (see below), whose sum is σ = 136147738747752. Its totient is φ = 45382579582582.

The previous prime is 90765159165097. The next prime is 90765159165167. The reversal of 90765159165166 is 66156195156709.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90765159165167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22691289791290 + ... + 22691289791293.

It is an arithmetic number, because the mean of its divisors is an integer number (34036934686938).

Almost surely, 2^{90765159165166} is an apocalyptic number.

90765159165166 is a deficient number, since it is larger than the sum of its proper divisors (45382579582586).

90765159165166 is a wasteful number, since it uses less digits than its factorization.

90765159165166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45382579582585.

The product of its (nonzero) digits is 91854000, while the sum is 67.

The spelling of 90765159165166 in words is "ninety trillion, seven hundred sixty-five billion, one hundred fifty-nine million, one hundred sixty-five thousand, one hundred sixty-six".