30775982913 has 16 divisors (see below), whose sum is σ = 49101283840. Its totient is φ = 18939066192.

The previous prime is 30775982891. The next prime is 30775982921. The reversal of 30775982913 is 31928957703.

30775982913 is a `hidden beast` number, since 30 + 7 + 7 + 598 + 2 + 9 + 13 = 666.

It is not a de Polignac number, because 30775982913 - 2⁹ = 30775982401 is a prime.

It is a super-2 number, since 2×30775982913² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30775982913.

It is not an unprimeable number, because it can be changed into a prime (30775982213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43840081 + ... + 43840782.

It is an arithmetic number, because the mean of its divisors is an integer number (3068830240).

Almost surely, 2^30775982913 is an apocalyptic number.

It is an amenable number.

30775982913 is a deficient number, since it is larger than the sum of its proper divisors (18325300927).

30775982913 is a wasteful number, since it uses less digits than its factorization.

30775982913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87680885 (or 87680879 counting only the distinct ones).

The product of its (nonzero) digits is 2857680, while the sum is 54.

The spelling of 30775982913 in words is "thirty billion, seven hundred seventy-five million, nine hundred eighty-two thousand, nine hundred thirteen".