90671340872 has 48 divisors (see below), whose sum is σ = 198071516160. Its totient is φ = 38798977056.

The previous prime is 90671340871. The next prime is 90671340883. The reversal of 90671340872 is 27804317609.

It is not an unprimeable number, because it can be changed into a prime (90671340871) 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 11 ways as a sum of consecutive naturals, for example, 74873 + ... + 432375.

It is an arithmetic number, because the mean of its divisors is an integer number (4126489920).

Almost surely, 2^90671340872 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 90671340872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99035758080).

90671340872 is an abundant number, since it is smaller than the sum of its proper divisors (107400175288).

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

90671340872 is a wasteful number, since it uses less digits than its factorization.

90671340872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358170 (or 358159 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 47.

The spelling of 90671340872 in words is "ninety billion, six hundred seventy-one million, three hundred forty thousand, eight hundred seventy-two".