90775312885 has 8 divisors (see below), whose sum is σ = 109280635776. Its totient is φ = 72386743440.

The previous prime is 90775312819. The next prime is 90775312891. The reversal of 90775312885 is 58821357709.

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

It is a de Polignac number, because none of the positive numbers 2^k-90775312885 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29186649 + ... + 29189758.

It is an arithmetic number, because the mean of its divisors is an integer number (13660079472).

Almost surely, 2^90775312885 is an apocalyptic number.

It is an amenable number.

90775312885 is a deficient number, since it is larger than the sum of its proper divisors (18505322891).

90775312885 is a wasteful number, since it uses less digits than its factorization.

90775312885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58376723.

The product of its (nonzero) digits is 4233600, while the sum is 55.

The spelling of 90775312885 in words is "ninety billion, seven hundred seventy-five million, three hundred twelve thousand, eight hundred eighty-five".