7896700668021 has 16 divisors (see below), whose sum is σ = 11494159262208. Its totient is φ = 4782525359600.

The previous prime is 7896700668013. The next prime is 7896700668041. The reversal of 7896700668021 is 1208660076987.

It is a cyclic number.

It is not a de Polignac number, because 7896700668021 - 2³ = 7896700668013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7896700668041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83798025 + ... + 83892206.

It is an arithmetic number, because the mean of its divisors is an integer number (718384953888).

Almost surely, 2^{7896700668021} is an apocalyptic number.

It is an amenable number.

7896700668021 is a deficient number, since it is larger than the sum of its proper divisors (3597458594187).

7896700668021 is a wasteful number, since it uses less digits than its factorization.

7896700668021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167691672.

The product of its (nonzero) digits is 12192768, while the sum is 60.

The spelling of 7896700668021 in words is "seven trillion, eight hundred ninety-six billion, seven hundred million, six hundred sixty-eight thousand, twenty-one".