7886992607641 has 27 divisors (see below), whose sum is σ = 9328953277917. Its totient is φ = 6648444109440.

The previous prime is 7886992607617. The next prime is 7886992607651. The reversal of 7886992607641 is 1467062996887.

The square root of 7886992607641 is 2808379.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 53733558025 + 7833259049616 = 231805^2 + 2798796^2 .

It is not a de Polignac number, because 7886992607641 - 2⁷ = 7886992607513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7886992607651) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1199174545 + ... + 1199181121.

It is an arithmetic number, because the mean of its divisors is an integer number (345516788071).

Almost surely, 2^{7886992607641} is an apocalyptic number.

7886992607641 is the 2808379-th square number.

7886992607641 is the 1404190-th centered octagonal number.

It is an amenable number.

7886992607641 is a deficient number, since it is larger than the sum of its proper divisors (1441960670276).

7886992607641 is an frugal number, since it uses more digits than its factorization.

7886992607641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13290 (or 6645 counting only the distinct ones).

The product of its (nonzero) digits is 438939648, while the sum is 73.

The spelling of 7886992607641 in words is "seven trillion, eight hundred eighty-six billion, nine hundred ninety-two million, six hundred seven thousand, six hundred forty-one".