65857342757 has 2 divisors, whose sum is σ = 65857342758. Its totient is φ = 65857342756.

The previous prime is 65857342739. The next prime is 65857342801. The reversal of 65857342757 is 75724375856.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38924922436 + 26932420321 = 197294^2 + 164111^2 .

It is a cyclic number.

It is not a de Polignac number, because 65857342757 - 2¹⁶ = 65857277221 is a prime.

It is a super-2 number, since 2×65857342757² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 65857342696 and 65857342705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65857342657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32928671378 + 32928671379.

It is an arithmetic number, because the mean of its divisors is an integer number (32928671379).

Almost surely, 2^65857342757 is an apocalyptic number.

It is an amenable number.

65857342757 is a deficient number, since it is larger than the sum of its proper divisors (1).

65857342757 is an equidigital number, since it uses as much as digits as its factorization.

65857342757 is an evil number, because the sum of its binary digits is even.

The product of its digits is 49392000, while the sum is 59.

The spelling of 65857342757 in words is "sixty-five billion, eight hundred fifty-seven million, three hundred forty-two thousand, seven hundred fifty-seven".