20701210668 has 12 divisors (see below), whose sum is σ = 48302824920. Its totient is φ = 6900403552.

The previous prime is 20701210667. The next prime is 20701210669. The reversal of 20701210668 is 86601210702.

It is an interprime number because it is at equal distance from previous prime (20701210667) and next prime (20701210669).

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (20701210667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 862550433 + ... + 862550456.

It is an arithmetic number, because the mean of its divisors is an integer number (4025235410).

Almost surely, 2^20701210668 is an apocalyptic number.

It is an amenable number.

20701210668 is an abundant number, since it is smaller than the sum of its proper divisors (27601614252).

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

20701210668 is a wasteful number, since it uses less digits than its factorization.

20701210668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1725100896 (or 1725100894 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The spelling of 20701210668 in words is "twenty billion, seven hundred one million, two hundred ten thousand, six hundred sixty-eight".