6457122440731 has 2 divisors, whose sum is σ = 6457122440732. Its totient is φ = 6457122440730.

The previous prime is 6457122440687. The next prime is 6457122440749. The reversal of 6457122440731 is 1370442217546.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6457122440731 - 2²¹ = 6457120343579 is a prime.

It is a super-2 number, since 2×6457122440731² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6457122440231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3228561220365 + 3228561220366.

It is an arithmetic number, because the mean of its divisors is an integer number (3228561220366).

Almost surely, 2^{6457122440731} is an apocalyptic number.

6457122440731 is a deficient number, since it is larger than the sum of its proper divisors (1).

6457122440731 is an equidigital number, since it uses as much as digits as its factorization.

6457122440731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1128960, while the sum is 46.

The spelling of 6457122440731 in words is "six trillion, four hundred fifty-seven billion, one hundred twenty-two million, four hundred forty thousand, seven hundred thirty-one".