20970765974 has 8 divisors (see below), whose sum is σ = 31508665200. Its totient is φ = 10467877576.

The previous prime is 20970765961. The next prime is 20970765979. The reversal of 20970765974 is 47956707902.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20970765979) 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, 8751209 + ... + 8753604.

It is an arithmetic number, because the mean of its divisors is an integer number (3938583150).

Almost surely, 2^20970765974 is an apocalyptic number.

20970765974 is a deficient number, since it is larger than the sum of its proper divisors (10537899226).

20970765974 is a wasteful number, since it uses less digits than its factorization.

20970765974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17505414.

The product of its (nonzero) digits is 6667920, while the sum is 56.

The spelling of 20970765974 in words is "twenty billion, nine hundred seventy million, seven hundred sixty-five thousand, nine hundred seventy-four".