85879777556 has 12 divisors (see below), whose sum is σ = 156823941792. Its totient is φ = 41072937048.

The previous prime is 85879777537. The next prime is 85879777573. The reversal of 85879777556 is 65577797858.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 466737830 + ... + 466738013.

It is an arithmetic number, because the mean of its divisors is an integer number (13068661816).

Almost surely, 2^85879777556 is an apocalyptic number.

It is an amenable number.

85879777556 is a deficient number, since it is larger than the sum of its proper divisors (70944164236).

85879777556 is a wasteful number, since it uses less digits than its factorization.

85879777556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 933475870 (or 933475868 counting only the distinct ones).

The product of its digits is 1037232000, while the sum is 74.

The spelling of 85879777556 in words is "eighty-five billion, eight hundred seventy-nine million, seven hundred seventy-seven thousand, five hundred fifty-six".