6457136957 has 2 divisors, whose sum is σ = 6457136958. Its totient is φ = 6457136956.

The previous prime is 6457136929. The next prime is 6457136999. The reversal of 6457136957 is 7596317546.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5113108036 + 1344028921 = 71506^2 + 36661^2 .

It is a cyclic number.

It is not a de Polignac number, because 6457136957 - 2¹⁶ = 6457071421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6457136899 and 6457136908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6457136927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3228568478 + 3228568479.

It is an arithmetic number, because the mean of its divisors is an integer number (3228568479).

Almost surely, 2^6457136957 is an apocalyptic number.

It is an amenable number.

6457136957 is a deficient number, since it is larger than the sum of its proper divisors (1).

6457136957 is an equidigital number, since it uses as much as digits as its factorization.

6457136957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4762800, while the sum is 53.

The square root of 6457136957 is about 80356.3124900589. The cubic root of 6457136957 is about 1862.1443028199.

The spelling of 6457136957 in words is "six billion, four hundred fifty-seven million, one hundred thirty-six thousand, nine hundred fifty-seven".