90975239880 has 512 divisors, whose sum is σ = 337490841600. Its totient is φ = 19157299200.

The previous prime is 90975239869. The next prime is 90975239893. The reversal of 90975239880 is 8893257909.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 110809870 + ... + 110810690.

It is an arithmetic number, because the mean of its divisors is an integer number (659161800).

Almost surely, 2^90975239880 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 90975239880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168745420800).

90975239880 is an abundant number, since it is smaller than the sum of its proper divisors (246515601720).

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

90975239880 is a wasteful number, since it uses less digits than its factorization.

90975239880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1045 (or 1041 counting only the distinct ones).

The product of its (nonzero) digits is 9797760, while the sum is 60.

The spelling of 90975239880 in words is "ninety billion, nine hundred seventy-five million, two hundred thirty-nine thousand, eight hundred eighty".