99609241992 has 128 divisors (see below), whose sum is σ = 293745916800. Its totient is φ = 27851378688.

The previous prime is 99609241981. The next prime is 99609241993. The reversal of 99609241992 is 29914290699.

It is a super-2 number, since 2×99609241992² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (99609241993) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 169978 + ... + 477609.

It is an arithmetic number, because the mean of its divisors is an integer number (2294889975).

Almost surely, 2^99609241992 is an apocalyptic number.

It is an amenable number.

99609241992 is an abundant number, since it is smaller than the sum of its proper divisors (194136674808).

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

99609241992 is a wasteful number, since it uses less digits than its factorization.

99609241992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647655 (or 647651 counting only the distinct ones).

The product of its (nonzero) digits is 5668704, while the sum is 60.

The spelling of 99609241992 in words is "ninety-nine billion, six hundred nine million, two hundred forty-one thousand, nine hundred ninety-two".