99139006512 has 800 divisors, whose sum is σ = 375479301120. Its totient is φ = 24522393600.

The previous prime is 99139006511. The next prime is 99139006541. The reversal of 99139006512 is 21560093199.

It is a happy number.

It is a super-2 number, since 2×99139006512² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (99139006511) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 338358238 + ... + 338358530.

Almost surely, 2^99139006512 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 99139006512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187739650560).

99139006512 is an abundant number, since it is smaller than the sum of its proper divisors (276340294608).

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

99139006512 is a wasteful number, since it uses less digits than its factorization.

99139006512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503 (or 488 counting only the distinct ones).

The product of its (nonzero) digits is 131220, while the sum is 45.

The spelling of 99139006512 in words is "ninety-nine billion, one hundred thirty-nine million, six thousand, five hundred twelve".