90947163580 has 192 divisors, whose sum is σ = 247750272000. Its totient is φ = 27233667072.

The previous prime is 90947163557. The next prime is 90947163641. The reversal of 90947163580 is 8536174909.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 43535176 + ... + 43537264.

It is an arithmetic number, because the mean of its divisors is an integer number (1290366000).

Almost surely, 2^90947163580 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 90947163580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123875136000).

90947163580 is an abundant number, since it is smaller than the sum of its proper divisors (156803108420).

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

90947163580 is a wasteful number, since it uses less digits than its factorization.

90947163580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3396 (or 3394 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 52.

The spelling of 90947163580 in words is "ninety billion, nine hundred forty-seven million, one hundred sixty-three thousand, five hundred eighty".