99042969840 has 320 divisors, whose sum is σ = 334061190144. Its totient is φ = 24206966784.

The previous prime is 99042969821. The next prime is 99042969847. The reversal of 99042969840 is 4896924099.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99042969847) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12576144 + ... + 12584016.

Almost surely, 2^99042969840 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 99042969840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167030595072).

99042969840 is an abundant number, since it is smaller than the sum of its proper divisors (235018220304).

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

99042969840 is a wasteful number, since it uses less digits than its factorization.

99042969840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8008 (or 8002 counting only the distinct ones).

The product of its (nonzero) digits is 10077696, while the sum is 60.

The spelling of 99042969840 in words is "ninety-nine billion, forty-two million, nine hundred sixty-nine thousand, eight hundred forty".