99910123292 has 144 divisors (see below), whose sum is σ = 225736580160. Its totient is φ = 38372640768.

The previous prime is 99910123283. The next prime is 99910123319. The reversal of 99910123292 is 29232101999.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17546798 + ... + 17552490.

It is an arithmetic number, because the mean of its divisors is an integer number (1567615140).

Almost surely, 2^99910123292 is an apocalyptic number.

99910123292 is a gapful number since it is divisible by the number (92) formed by its first and last digit.

99910123292 is the 258083-rd pentagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99910123292, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112868290080).

99910123292 is an abundant number, since it is smaller than the sum of its proper divisors (125826456868).

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

99910123292 is a wasteful number, since it uses less digits than its factorization.

99910123292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5980 (or 5971 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 47.

The spelling of 99910123292 in words is "ninety-nine billion, nine hundred ten million, one hundred twenty-three thousand, two hundred ninety-two".