99425938107972 has 192 divisors, whose sum is σ = 269250022218240. Its totient is φ = 27968040308736.

The previous prime is 99425938107949. The next prime is 99425938107989. The reversal of 99425938107972 is 27970183952499.

It is a junction number, because it is equal to n+sod(n) for n = 99425938107894 and 99425938107903.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12764913054 + ... + 12764920842.

It is an arithmetic number, because the mean of its divisors is an integer number (1402343865720).

Almost surely, 2^{99425938107972} 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 99425938107972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134625011109120).

99425938107972 is an abundant number, since it is smaller than the sum of its proper divisors (169824084110268).

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

99425938107972 is a wasteful number, since it uses less digits than its factorization.

99425938107972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11342 (or 11340 counting only the distinct ones).

The product of its (nonzero) digits is 617258880, while the sum is 75.

The spelling of 99425938107972 in words is "ninety-nine trillion, four hundred twenty-five billion, nine hundred thirty-eight million, one hundred seven thousand, nine hundred seventy-two".