85712256779 has 8 divisors (see below), whose sum is σ = 88856906112. Its totient is φ = 82591341120.

The previous prime is 85712256677. The next prime is 85712256781. The reversal of 85712256779 is 97765221758.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85712256779 - 2⁸ = 85712256523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85712256979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5926064 + ... + 5940509.

It is an arithmetic number, because the mean of its divisors is an integer number (11107113264).

Almost surely, 2^85712256779 is an apocalyptic number.

85712256779 is a deficient number, since it is larger than the sum of its proper divisors (3144649333).

85712256779 is a wasteful number, since it uses less digits than its factorization.

85712256779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11866837.

The product of its digits is 14817600, while the sum is 59.

The spelling of 85712256779 in words is "eighty-five billion, seven hundred twelve million, two hundred fifty-six thousand, seven hundred seventy-nine".