99081039672 has 96 divisors (see below), whose sum is σ = 279179671680. Its totient is φ = 32920616160.

The previous prime is 99081039613. The next prime is 99081039703. The reversal of 99081039672 is 27693018099.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 522643 + ... + 686525.

It is an arithmetic number, because the mean of its divisors is an integer number (2908121580).

Almost surely, 2^99081039672 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 99081039672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139589835840).

99081039672 is an abundant number, since it is smaller than the sum of its proper divisors (180098632008).

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

99081039672 is a wasteful number, since it uses less digits than its factorization.

99081039672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164215 (or 164199 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 54.

The spelling of 99081039672 in words is "ninety-nine billion, eighty-one million, thirty-nine thousand, six hundred seventy-two".