7964966800457 has 4 divisors (see below), whose sum is σ = 8095540026756. Its totient is φ = 7834393574160.

The previous prime is 7964966800447. The next prime is 7964966800471. The reversal of 7964966800457 is 7540086694697.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 127184243641 + 7837782556816 = 356629^2 + 2799604^2 .

It is a cyclic number.

It is not a de Polignac number, because 7964966800457 - 2⁶ = 7964966800393 is a prime.

It is a super-2 number, since 2×7964966800457² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7964966800447) 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, 65286613058 + ... + 65286613179.

It is an arithmetic number, because the mean of its divisors is an integer number (2023885006689).

Almost surely, 2^{7964966800457} is an apocalyptic number.

It is an amenable number.

7964966800457 is a deficient number, since it is larger than the sum of its proper divisors (130573226299).

7964966800457 is a wasteful number, since it uses less digits than its factorization.

7964966800457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130573226298.

The product of its (nonzero) digits is 548674560, while the sum is 71.

The spelling of 7964966800457 in words is "seven trillion, nine hundred sixty-four billion, nine hundred sixty-six million, eight hundred thousand, four hundred fifty-seven".