30197066172 has 48 divisors (see below), whose sum is σ = 86719782912. Its totient is φ = 7964061120.

The previous prime is 30197066171. The next prime is 30197066177. The reversal of 30197066172 is 27166079103.

It is a super-2 number, since 2×30197066172² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30197066171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13825404 + ... + 13827587.

It is an arithmetic number, because the mean of its divisors is an integer number (1806662144).

Almost surely, 2^30197066172 is an apocalyptic number.

It is an amenable number.

30197066172 is an abundant number, since it is smaller than the sum of its proper divisors (56522716740).

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

30197066172 is a wasteful number, since it uses less digits than its factorization.

30197066172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27653018 (or 27653016 counting only the distinct ones).

The product of its (nonzero) digits is 95256, while the sum is 42.

The spelling of 30197066172 in words is "thirty billion, one hundred ninety-seven million, sixty-six thousand, one hundred seventy-two".