30772666188 has 36 divisors (see below), whose sum is σ = 84857959368. Its totient is φ = 9325050240.

The previous prime is 30772666121. The next prime is 30772666193. The reversal of 30772666188 is 88166627703.

It is a tau number, because it is divible by the number of its divisors (36).

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, 38853981 + ... + 38854772.

It is an arithmetic number, because the mean of its divisors is an integer number (2357165538).

Almost surely, 2^30772666188 is an apocalyptic number.

It is an amenable number.

30772666188 is an abundant number, since it is smaller than the sum of its proper divisors (54085293180).

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

30772666188 is a wasteful number, since it uses less digits than its factorization.

30772666188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77708774 (or 77708769 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 54.

The spelling of 30772666188 in words is "thirty billion, seven hundred seventy-two million, six hundred sixty-six thousand, one hundred eighty-eight".