90987261080 has 16 divisors (see below), whose sum is σ = 204721337520. Its totient is φ = 36394904416.

The previous prime is 90987261077. The next prime is 90987261083. The reversal of 90987261080 is 8016278909.

It is an interprime number because it is at equal distance from previous prime (90987261077) and next prime (90987261083).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90987261083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1137340724 + ... + 1137340803.

It is an arithmetic number, because the mean of its divisors is an integer number (12795083595).

Almost surely, 2^90987261080 is an apocalyptic number.

It is an amenable number.

90987261080 is an abundant number, since it is smaller than the sum of its proper divisors (113734076440).

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

90987261080 is a wasteful number, since it uses less digits than its factorization.

90987261080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2274681538 (or 2274681534 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 50.

The spelling of 90987261080 in words is "ninety billion, nine hundred eighty-seven million, two hundred sixty-one thousand, eighty".