90011538500 has 48 divisors (see below), whose sum is σ = 211707153840. Its totient is φ = 33235027200.

The previous prime is 90011538493. The next prime is 90011538509. The reversal of 90011538500 is 583511009.

It can be written as a sum of positive squares in 8 ways, for example, as 36594159616 + 53417378884 = 191296^2 + 231122^2 .

It is not an unprimeable number, because it can be changed into a prime (90011538509) 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, 6917465 + ... + 6930464.

It is an arithmetic number, because the mean of its divisors is an integer number (4410565705).

Almost surely, 2^90011538500 is an apocalyptic number.

It is an amenable number.

90011538500 is an abundant number, since it is smaller than the sum of its proper divisors (121695615340).

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

90011538500 is a wasteful number, since it uses less digits than its factorization.

90011538500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13847961 (or 13847949 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 32.

The spelling of 90011538500 in words is "ninety billion, eleven million, five hundred thirty-eight thousand, five hundred".