90759954385 has 4 divisors (see below), whose sum is σ = 108911945268. Its totient is φ = 72607963504.

The previous prime is 90759954323. The next prime is 90759954391. The reversal of 90759954385 is 58345995709.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58345995709 = 9157 ⋅6371737.

It can be written as a sum of positive squares in 2 ways, for example, as 54218191104 + 36541763281 = 232848^2 + 191159^2 .

It is a cyclic number.

It is not a de Polignac number, because 90759954385 - 2¹⁷ = 90759823313 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9075995434 + ... + 9075995443.

It is an arithmetic number, because the mean of its divisors is an integer number (27227986317).

Almost surely, 2^90759954385 is an apocalyptic number.

It is an amenable number.

90759954385 is a deficient number, since it is larger than the sum of its proper divisors (18151990883).

90759954385 is a wasteful number, since it uses less digits than its factorization.

90759954385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18151990882.

The product of its (nonzero) digits is 61236000, while the sum is 64.

The spelling of 90759954385 in words is "ninety billion, seven hundred fifty-nine million, nine hundred fifty-four thousand, three hundred eighty-five".