90818414720 has 64 divisors (see below), whose sum is σ = 236850315840. Its totient is φ = 33024875520.

The previous prime is 90818414693. The next prime is 90818414723. The reversal of 90818414720 is 2741481809.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (90818414723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6443132 + ... + 6457211.

It is an arithmetic number, because the mean of its divisors is an integer number (3700786185).

Almost surely, 2^90818414720 is an apocalyptic number.

It is an amenable number.

90818414720 is an abundant number, since it is smaller than the sum of its proper divisors (146031901120).

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

90818414720 is a wasteful number, since it uses less digits than its factorization.

90818414720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12900373 (or 12900361 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 44.

The spelling of 90818414720 in words is "ninety billion, eight hundred eighteen million, four hundred fourteen thousand, seven hundred twenty".