90062091520 has 144 divisors (see below), whose sum is σ = 229821963840. Its totient is φ = 33716846592.

The previous prime is 90062091517. The next prime is 90062091523. The reversal of 90062091520 is 2519026009.

It is an interprime number because it is at equal distance from previous prime (90062091517) and next prime (90062091523).

It is a super-2 number, since 2×90062091520² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90062091523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1996252 + ... + 2040868.

It is an arithmetic number, because the mean of its divisors is an integer number (1595985860).

Almost surely, 2^90062091520 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 90062091520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114910981920).

90062091520 is an abundant number, since it is smaller than the sum of its proper divisors (139759872320).

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

90062091520 is a wasteful number, since it uses less digits than its factorization.

90062091520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44740 (or 44726 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 34.

The spelling of 90062091520 in words is "ninety billion, sixty-two million, ninety-one thousand, five hundred twenty".