30125921136 has 160 divisors (see below), whose sum is σ = 83702196288. Its totient is φ = 9303490560.

The previous prime is 30125921129. The next prime is 30125921173. The reversal of 30125921136 is 63112952103.

It is a super-2 number, since 2×30125921136² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30125921097 and 30125921106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14475616 + ... + 14477696.

Almost surely, 2^30125921136 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 30125921136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41851098144).

30125921136 is an abundant number, since it is smaller than the sum of its proper divisors (53576275152).

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

30125921136 is a wasteful number, since it uses less digits than its factorization.

30125921136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2379 (or 2373 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 33.

The spelling of 30125921136 in words is "thirty billion, one hundred twenty-five million, nine hundred twenty-one thousand, one hundred thirty-six".