21313670706 has 12 divisors (see below), whose sum is σ = 46179619902. Its totient is φ = 7104556896.

The previous prime is 21313670689. The next prime is 21313670731. The reversal of 21313670706 is 60707631312.

It can be written as a sum of positive squares in only one way, i.e., 21304029681 + 9641025 = 145959^2 + 3105^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 592046391 + ... + 592046426.

Almost surely, 2^21313670706 is an apocalyptic number.

21313670706 is an abundant number, since it is smaller than the sum of its proper divisors (24865949196).

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

21313670706 is a wasteful number, since it uses less digits than its factorization.

21313670706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1184092825 (or 1184092822 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 36.

The spelling of 21313670706 in words is "twenty-one billion, three hundred thirteen million, six hundred seventy thousand, seven hundred six".