99761289818112 has 390 divisors, whose sum is σ = 322703751449112. Its totient is φ = 30695764230144.

The previous prime is 99761289818101. The next prime is 99761289818213. The reversal of 99761289818112 is 21181898216799.

99761289818112 is a `hidden beast` number, since 99 + 76 + 1 + 289 + 8 + 181 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 55180533 + ... + 56959755.

Almost surely, 2^{99761289818112} 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 99761289818112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161351875724556).

99761289818112 is an abundant number, since it is smaller than the sum of its proper divisors (222942461631000).

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

99761289818112 is a wasteful number, since it uses less digits than its factorization.

99761289818112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1779285 (or 1779241 counting only the distinct ones).

The product of its digits is 62705664, while the sum is 72.

The spelling of 99761289818112 in words is "ninety-nine trillion, seven hundred sixty-one billion, two hundred eighty-nine million, eight hundred eighteen thousand, one hundred twelve".