90830534912 has 72 divisors (see below), whose sum is σ = 197447395320. Its totient is φ = 41450618880.

The previous prime is 90830534909. The next prime is 90830534917. The reversal of 90830534912 is 21943503809.

It can be written as a sum of positive squares in 4 ways, for example, as 3041536 + 90827493376 = 1744^2 + 301376^2 .

It is not an unprimeable number, because it can be changed into a prime (90830534917) 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, 142862 + ... + 449522.

It is an arithmetic number, because the mean of its divisors is an integer number (2742324935).

Almost surely, 2^90830534912 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 90830534912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98723697660).

90830534912 is an abundant number, since it is smaller than the sum of its proper divisors (106616860408).

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

90830534912 is a wasteful number, since it uses less digits than its factorization.

90830534912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306779 (or 306765 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 44.

The spelling of 90830534912 in words is "ninety billion, eight hundred thirty million, five hundred thirty-four thousand, nine hundred twelve".