90983720772 has 216 divisors, whose sum is σ = 280967756160. Its totient is φ = 25665232320.

The previous prime is 90983720767. The next prime is 90983720783. The reversal of 90983720772 is 27702738909.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3750522 + ... + 3774702.

Almost surely, 2^90983720772 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 90983720772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140483878080).

90983720772 is an abundant number, since it is smaller than the sum of its proper divisors (189984035388).

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

90983720772 is a wasteful number, since it uses less digits than its factorization.

90983720772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24293 (or 24272 counting only the distinct ones).

The product of its (nonzero) digits is 2667168, while the sum is 54.

The spelling of 90983720772 in words is "ninety billion, nine hundred eighty-three million, seven hundred twenty thousand, seven hundred seventy-two".