9990526771080 has 80 divisors (see below), whose sum is σ = 33579270547020. Its totient is φ = 2664140471424.

The previous prime is 9990526771079. The next prime is 9990526771091. The reversal of 9990526771080 is 801776250999.

9990526771080 is a `hidden beast` number, since 9 + 9 + 90 + 526 + 7 + 7 + 10 + 8 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 9851977553796 + 138549217284 = 3138786^2 + 372222^2 .

It is a junction number, because it is equal to n+sod(n) for n = 9990526770999 and 9990526771017.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1541744719 + ... + 1541751198.

Almost surely, 2^{9990526771080} is an apocalyptic number.

9990526771080 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

9990526771080 is an abundant number, since it is smaller than the sum of its proper divisors (23588743775940).

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

9990526771080 is a wasteful number, since it uses less digits than its factorization.

9990526771080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3083495940 (or 3083495927 counting only the distinct ones).

The product of its (nonzero) digits is 17146080, while the sum is 63.

The spelling of 9990526771080 in words is "nine trillion, nine hundred ninety billion, five hundred twenty-six million, seven hundred seventy-one thousand, eighty".