99706771135920 has 320 divisors, whose sum is σ = 344435419722240. Its totient is φ = 23703076970496.

The previous prime is 99706771135903. The next prime is 99706771135943. The reversal of 99706771135920 is 2953117760799.

It is a super-2 number, since 2×99706771135920² (a number of 29 digits) contains 22 as substring.

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, 7764999 + ... + 16115481.

It is an arithmetic number, because the mean of its divisors is an integer number (1076360686632).

Almost surely, 2^{99706771135920} 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 99706771135920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172217709861120).

99706771135920 is an abundant number, since it is smaller than the sum of its proper divisors (244728648586320).

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

99706771135920 is a wasteful number, since it uses less digits than its factorization.

99706771135920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8350644 (or 8350638 counting only the distinct ones).

The product of its (nonzero) digits is 45008460, while the sum is 66.

The spelling of 99706771135920 in words is "ninety-nine trillion, seven hundred six billion, seven hundred seventy-one million, one hundred thirty-five thousand, nine hundred twenty".