20674666674 has 24 divisors (see below), whose sum is σ = 44800666092. Its totient is φ = 6890700960.

The previous prime is 20674666619. The next prime is 20674666681. The reversal of 20674666674 is 47666647602.

It can be written as a sum of positive squares in 2 ways, for example, as 20284880625 + 389786049 = 142425^2 + 19743^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20674666674.

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, 87532 + ... + 221384.

Almost surely, 2^20674666674 is an apocalyptic number.

20674666674 is an abundant number, since it is smaller than the sum of its proper divisors (24125999418).

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

20674666674 is a wasteful number, since it uses less digits than its factorization.

20674666674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142442 (or 142439 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 54.

The spelling of 20674666674 in words is "twenty billion, six hundred seventy-four million, six hundred sixty-six thousand, six hundred seventy-four".