90975912806 has 8 divisors (see below), whose sum is σ = 136465205880. Its totient is φ = 45487510848.

The previous prime is 90975912779. The next prime is 90975912869. The reversal of 90975912806 is 60821957909.

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

It is a Curzon number.

It is a congruent 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, 173270 + ... + 460406.

It is an arithmetic number, because the mean of its divisors is an integer number (17058150735).

Almost surely, 2^90975912806 is an apocalyptic number.

90975912806 is a deficient number, since it is larger than the sum of its proper divisors (45489293074).

90975912806 is a wasteful number, since it uses less digits than its factorization.

90975912806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445558.

The product of its (nonzero) digits is 2449440, while the sum is 56.

The spelling of 90975912806 in words is "ninety billion, nine hundred seventy-five million, nine hundred twelve thousand, eight hundred six".