495642631157 has 2 divisors, whose sum is σ = 495642631158. Its totient is φ = 495642631156.

The previous prime is 495642631153. The next prime is 495642631207. The reversal of 495642631157 is 751136246594.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 411129745636 + 84512885521 = 641194^2 + 290711^2 .

It is a cyclic number.

It is not a de Polignac number, because 495642631157 - 2² = 495642631153 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 495642631099 and 495642631108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (495642631151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247821315578 + 247821315579.

It is an arithmetic number, because the mean of its divisors is an integer number (247821315579).

Almost surely, 2^495642631157 is an apocalyptic number.

It is an amenable number.

495642631157 is a deficient number, since it is larger than the sum of its proper divisors (1).

495642631157 is an equidigital number, since it uses as much as digits as its factorization.

495642631157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5443200, while the sum is 53.

The spelling of 495642631157 in words is "four hundred ninety-five billion, six hundred forty-two million, six hundred thirty-one thousand, one hundred fifty-seven".