85746277739 has 2 divisors, whose sum is σ = 85746277740. Its totient is φ = 85746277738.

The previous prime is 85746277733. The next prime is 85746277777. The reversal of 85746277739 is 93777264758.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85746277739 is a prime.

It is not a weakly prime, because it can be changed into another prime (85746277733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42873138869 + 42873138870.

It is an arithmetic number, because the mean of its divisors is an integer number (42873138870).

Almost surely, 2^85746277739 is an apocalyptic number.

85746277739 is a deficient number, since it is larger than the sum of its proper divisors (1).

85746277739 is an equidigital number, since it uses as much as digits as its factorization.

85746277739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124467840, while the sum is 65.

The spelling of 85746277739 in words is "eighty-five billion, seven hundred forty-six million, two hundred seventy-seven thousand, seven hundred thirty-nine".