20676568934 has 64 divisors (see below), whose sum is σ = 37433290752. Its totient is φ = 8374212000.

The previous prime is 20676568933. The next prime is 20676568943. The reversal of 20676568934 is 43986567602.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20676568934.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20676568933) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19672709 + ... + 19673759.

It is an arithmetic number, because the mean of its divisors is an integer number (584895168).

Almost surely, 2^20676568934 is an apocalyptic number.

20676568934 is a deficient number, since it is larger than the sum of its proper divisors (16756721818).

20676568934 is a wasteful number, since it uses less digits than its factorization.

20676568934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1761.

The product of its (nonzero) digits is 13063680, while the sum is 56.

The spelling of 20676568934 in words is "twenty billion, six hundred seventy-six million, five hundred sixty-eight thousand, nine hundred thirty-four".