90108207161 has 8 divisors (see below), whose sum is σ = 108400850880. Its totient is φ = 73170574128.

The previous prime is 90108207157. The next prime is 90108207169. The reversal of 90108207161 is 16170280109.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90108207161 - 2² = 90108207157 is a prime.

It is a super-4 number, since 4×90108207161⁴ (a number of 45 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (90108207169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 338752526 + ... + 338752791.

It is an arithmetic number, because the mean of its divisors is an integer number (13550106360).

Almost surely, 2^90108207161 is an apocalyptic number.

It is an amenable number.

90108207161 is a deficient number, since it is larger than the sum of its proper divisors (18292643719).

90108207161 is a wasteful number, since it uses less digits than its factorization.

90108207161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677505343.

The product of its (nonzero) digits is 6048, while the sum is 35.

The spelling of 90108207161 in words is "ninety billion, one hundred eight million, two hundred seven thousand, one hundred sixty-one".