90018497008 has 160 divisors (see below), whose sum is σ = 211864296960. Its totient is φ = 36568350720.

The previous prime is 90018497003. The next prime is 90018497029. The reversal of 90018497008 is 80079481009.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90018497003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5606560 + ... + 5622592.

It is an arithmetic number, because the mean of its divisors is an integer number (1324151856).

Almost surely, 2^90018497008 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90018497008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105932148480).

90018497008 is an abundant number, since it is smaller than the sum of its proper divisors (121845799952).

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

90018497008 is a wasteful number, since it uses less digits than its factorization.

90018497008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16167 (or 16161 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 46.

The spelling of 90018497008 in words is "ninety billion, eighteen million, four hundred ninety-seven thousand, eight".