90498517074 has 96 divisors (see below), whose sum is σ = 235999370880. Its totient is φ = 24484052736.

The previous prime is 90498517073. The next prime is 90498517097. The reversal of 90498517074 is 47071589409.

It is a self number, because there is not a number n which added to its sum of digits gives 90498517074.

It is not an unprimeable number, because it can be changed into a prime (90498517073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5720944 + ... + 5736740.

It is an arithmetic number, because the mean of its divisors is an integer number (2458326780).

Almost surely, 2^90498517074 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90498517074, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117999685440).

90498517074 is an abundant number, since it is smaller than the sum of its proper divisors (145500853806).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90498517074 is a wasteful number, since it uses less digits than its factorization.

90498517074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18224 (or 18221 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 54.

The spelling of 90498517074 in words is "ninety billion, four hundred ninety-eight million, five hundred seventeen thousand, seventy-four".