30676772781 has 12 divisors (see below), whose sum is σ = 44382486720. Its totient is φ = 20418139080.

The previous prime is 30676772761. The next prime is 30676772783. The reversal of 30676772781 is 18727767603.

30676772781 is a `hidden beast` number, since 306 + 7 + 67 + 7 + 278 + 1 = 666.

It is not a de Polignac number, because 30676772781 - 2⁷ = 30676772653 is a prime.

It is a super-2 number, since 2×30676772781² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30676772783) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2747685 + ... + 2758826.

It is an arithmetic number, because the mean of its divisors is an integer number (3698540560).

Almost surely, 2^30676772781 is an apocalyptic number.

It is an amenable number.

30676772781 is a deficient number, since it is larger than the sum of its proper divisors (13705713939).

30676772781 is a wasteful number, since it uses less digits than its factorization.

30676772781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5507136 (or 5507133 counting only the distinct ones).

The product of its (nonzero) digits is 4148928, while the sum is 54.

The spelling of 30676772781 in words is "thirty billion, six hundred seventy-six million, seven hundred seventy-two thousand, seven hundred eighty-one".