85764779876 has 6 divisors (see below), whose sum is σ = 150088364790. Its totient is φ = 42882389936.

The previous prime is 85764779873. The next prime is 85764779899. The reversal of 85764779876 is 67897746758.

It can be written as a sum of positive squares in only one way, i.e., 47883942976 + 37880836900 = 218824^2 + 194630^2 .

It is not an unprimeable number, because it can be changed into a prime (85764779873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10720597481 + ... + 10720597488.

It is an arithmetic number, because the mean of its divisors is an integer number (25014727465).

Almost surely, 2^85764779876 is an apocalyptic number.

It is an amenable number.

85764779876 is a deficient number, since it is larger than the sum of its proper divisors (64323584914).

85764779876 is a wasteful number, since it uses less digits than its factorization.

85764779876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21441194973 (or 21441194971 counting only the distinct ones).

The product of its digits is 995742720, while the sum is 74.

The spelling of 85764779876 in words is "eighty-five billion, seven hundred sixty-four million, seven hundred seventy-nine thousand, eight hundred seventy-six".