990692065980 has 192 divisors, whose sum is σ = 3226392207360. Its totient is φ = 252061286400.

The previous prime is 990692065967. The next prime is 990692065999. The reversal of 990692065980 is 89560296099.

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, 771772 + ... + 1605308.

It is an arithmetic number, because the mean of its divisors is an integer number (16804126080).

Almost surely, 2^990692065980 is an apocalyptic number.

990692065980 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 990692065980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1613196103680).

990692065980 is an abundant number, since it is smaller than the sum of its proper divisors (2235700141380).

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

990692065980 is a wasteful number, since it uses less digits than its factorization.

990692065980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833657 (or 833649 counting only the distinct ones).

The product of its (nonzero) digits is 18895680, while the sum is 63.

The spelling of 990692065980 in words is "nine hundred ninety billion, six hundred ninety-two million, sixty-five thousand, nine hundred eighty".