85148356277 has 2 divisors, whose sum is σ = 85148356278. Its totient is φ = 85148356276.

The previous prime is 85148356259. The next prime is 85148356291. The reversal of 85148356277 is 77265384158.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82625202916 + 2523153361 = 287446^2 + 50231^2 .

It is a cyclic number.

It is not a de Polignac number, because 85148356277 - 2²⁶ = 85081247413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85148356477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42574178138 + 42574178139.

It is an arithmetic number, because the mean of its divisors is an integer number (42574178139).

Almost surely, 2^85148356277 is an apocalyptic number.

It is an amenable number.

85148356277 is a deficient number, since it is larger than the sum of its proper divisors (1).

85148356277 is an equidigital number, since it uses as much as digits as its factorization.

85148356277 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11289600, while the sum is 56.

The spelling of 85148356277 in words is "eighty-five billion, one hundred forty-eight million, three hundred fifty-six thousand, two hundred seventy-seven".