7656636216451 has 2 divisors, whose sum is σ = 7656636216452. Its totient is φ = 7656636216450.

The previous prime is 7656636216371. The next prime is 7656636216511. The reversal of 7656636216451 is 1546126366567.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7656636216451 - 2³³ = 7648046281859 is a prime.

It is not a weakly prime, because it can be changed into another prime (7656636216751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3828318108225 + 3828318108226.

It is an arithmetic number, because the mean of its divisors is an integer number (3828318108226).

Almost surely, 2^{7656636216451} is an apocalyptic number.

7656636216451 is a deficient number, since it is larger than the sum of its proper divisors (1).

7656636216451 is an equidigital number, since it uses as much as digits as its factorization.

7656636216451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32659200, while the sum is 58.

The spelling of 7656636216451 in words is "seven trillion, six hundred fifty-six billion, six hundred thirty-six million, two hundred sixteen thousand, four hundred fifty-one".