65857342739 has 2 divisors, whose sum is σ = 65857342740. Its totient is φ = 65857342738.

The previous prime is 65857342723. The next prime is 65857342757. The reversal of 65857342739 is 93724375856.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65857342739 - 2⁴ = 65857342723 is a prime.

It is not a weakly prime, because it can be changed into another prime (65857344739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32928671369 + 32928671370.

It is an arithmetic number, because the mean of its divisors is an integer number (32928671370).

Almost surely, 2^65857342739 is an apocalyptic number.

65857342739 is a deficient number, since it is larger than the sum of its proper divisors (1).

65857342739 is an equidigital number, since it uses as much as digits as its factorization.

65857342739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38102400, while the sum is 59.

The spelling of 65857342739 in words is "sixty-five billion, eight hundred fifty-seven million, three hundred forty-two thousand, seven hundred thirty-nine".