90808479523 has 8 divisors (see below), whose sum is σ = 92830402368. Its totient is φ = 88790299584.

The previous prime is 90808479511. The next prime is 90808479611. The reversal of 90808479523 is 32597480809.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90808479523 is a prime.

It is a super-2 number, since 2×90808479523² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90808479323) 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, 886636 + ... + 983737.

It is an arithmetic number, because the mean of its divisors is an integer number (11603800296).

Almost surely, 2^90808479523 is an apocalyptic number.

90808479523 is a deficient number, since it is larger than the sum of its proper divisors (2021922845).

90808479523 is a wasteful number, since it uses less digits than its factorization.

90808479523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1871453.

The product of its (nonzero) digits is 4354560, while the sum is 55.

The spelling of 90808479523 in words is "ninety billion, eight hundred eight million, four hundred seventy-nine thousand, five hundred twenty-three".