7106816565621 has 24 divisors (see below), whose sum is σ = 10350686421504. Its totient is φ = 4698670203360.

The previous prime is 7106816565557. The next prime is 7106816565637. The reversal of 7106816565621 is 1265656186017.

7106816565621 is a `hidden beast` number, since 7 + 1 + 0 + 6 + 8 + 1 + 6 + 5 + 6 + 5 + 621 = 666.

It is not a de Polignac number, because 7106816565621 - 2⁶ = 7106816565557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7106816565671) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5892901 + ... + 6995706.

It is an arithmetic number, because the mean of its divisors is an integer number (431278600896).

Almost surely, 2^{7106816565621} is an apocalyptic number.

It is an amenable number.

7106816565621 is a deficient number, since it is larger than the sum of its proper divisors (3243869855883).

7106816565621 is a wasteful number, since it uses less digits than its factorization.

7106816565621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12889121 (or 12889118 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 54.

The spelling of 7106816565621 in words is "seven trillion, one hundred six billion, eight hundred sixteen million, five hundred sixty-five thousand, six hundred twenty-one".