30857804412 has 12 divisors (see below), whose sum is σ = 72001543656. Its totient is φ = 10285934800.

The previous prime is 30857804357. The next prime is 30857804443. The reversal of 30857804412 is 21440875803.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1285741839 + ... + 1285741862.

It is an arithmetic number, because the mean of its divisors is an integer number (6000128638).

Almost surely, 2^30857804412 is an apocalyptic number.

It is an amenable number.

30857804412 is an abundant number, since it is smaller than the sum of its proper divisors (41143739244).

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

30857804412 is a wasteful number, since it uses less digits than its factorization.

30857804412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2571483708 (or 2571483706 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 42.

The spelling of 30857804412 in words is "thirty billion, eight hundred fifty-seven million, eight hundred four thousand, four hundred twelve".