90909545500 has 24 divisors (see below), whose sum is σ = 198546448464. Its totient is φ = 36363818000.

The previous prime is 90909545497. The next prime is 90909545501. The reversal of 90909545500 is 554590909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90909545501) 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, 90909046 + ... + 90910045.

It is an arithmetic number, because the mean of its divisors is an integer number (8272768686).

Almost surely, 2^90909545500 is an apocalyptic number.

It is an amenable number.

90909545500 is an abundant number, since it is smaller than the sum of its proper divisors (107636902964).

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

90909545500 is a wasteful number, since it uses less digits than its factorization.

90909545500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181819110 (or 181819098 counting only the distinct ones).

The product of its (nonzero) digits is 364500, while the sum is 46.

The spelling of 90909545500 in words is "ninety billion, nine hundred nine million, five hundred forty-five thousand, five hundred".