30686245172 has 36 divisors (see below), whose sum is σ = 59219196960. Its totient is φ = 13902791760.

The previous prime is 30686245147. The next prime is 30686245193. The reversal of 30686245172 is 27154268603.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45329 + ... + 251847.

Almost surely, 2^30686245172 is an apocalyptic number.

It is an amenable number.

30686245172 is a deficient number, since it is larger than the sum of its proper divisors (28532951788).

30686245172 is a wasteful number, since it uses less digits than its factorization.

30686245172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206852 (or 206839 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 44.

The spelling of 30686245172 in words is "thirty billion, six hundred eighty-six million, two hundred forty-five thousand, one hundred seventy-two".