99190090992 has 40 divisors (see below), whose sum is σ = 262490855760. Its totient is φ = 32256939520.

The previous prime is 99190090969. The next prime is 99190090999. The reversal of 99190090992 is 29909009199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99190090999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25198767 + ... + 25202702.

It is an arithmetic number, because the mean of its divisors is an integer number (6562271394).

Almost surely, 2^99190090992 is an apocalyptic number.

It is an amenable number.

99190090992 is an abundant number, since it is smaller than the sum of its proper divisors (163300764768).

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

99190090992 is a wasteful number, since it uses less digits than its factorization.

99190090992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50401521 (or 50401515 counting only the distinct ones).

The product of its (nonzero) digits is 1062882, while the sum is 57.

The spelling of 99190090992 in words is "ninety-nine billion, one hundred ninety million, ninety thousand, nine hundred ninety-two".