30172661072 has 20 divisors (see below), whose sum is σ = 61898327316. Its totient is φ = 14198899200.

The previous prime is 30172661063. The next prime is 30172661093. The reversal of 30172661072 is 27016627103.

It can be written as a sum of positive squares in 2 ways, for example, as 24899577616 + 5273083456 = 157796^2 + 72616^2 .

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, 55464179 + ... + 55464722.

Almost surely, 2^30172661072 is an apocalyptic number.

It is an amenable number.

30172661072 is an abundant number, since it is smaller than the sum of its proper divisors (31725666244).

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

30172661072 is a wasteful number, since it uses less digits than its factorization.

30172661072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110928926 (or 110928920 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 35.

The spelling of 30172661072 in words is "thirty billion, one hundred seventy-two million, six hundred sixty-one thousand, seventy-two".