6457248998791 has 4 divisors (see below), whose sum is σ = 6679912757400. Its totient is φ = 6234585240184.

The previous prime is 6457248998777. The next prime is 6457248998813. The reversal of 6457248998791 is 1978998427546.

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

It is a cyclic number.

It is not a de Polignac number, because 6457248998791 - 2¹⁵ = 6457248966023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6457248998701) 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, 111331879261 + ... + 111331879318.

It is an arithmetic number, because the mean of its divisors is an integer number (1669978189350).

Almost surely, 2^{6457248998791} is an apocalyptic number.

6457248998791 is a deficient number, since it is larger than the sum of its proper divisors (222663758609).

6457248998791 is a wasteful number, since it uses less digits than its factorization.

6457248998791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222663758608.

The product of its digits is 2194698240, while the sum is 79.

The spelling of 6457248998791 in words is "six trillion, four hundred fifty-seven billion, two hundred forty-eight million, nine hundred ninety-eight thousand, seven hundred ninety-one".