85778414836 has 72 divisors (see below), whose sum is σ = 161694473472. Its totient is φ = 39804480000.

The previous prime is 85778414797. The next prime is 85778414849. The reversal of 85778414836 is 63841487758.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31639521 + ... + 31642231.

It is an arithmetic number, because the mean of its divisors is an integer number (2245756576).

Almost surely, 2^85778414836 is an apocalyptic number.

It is an amenable number.

85778414836 is a deficient number, since it is larger than the sum of its proper divisors (75916058636).

85778414836 is a wasteful number, since it uses less digits than its factorization.

85778414836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3121 (or 3102 counting only the distinct ones).

The product of its digits is 36126720, while the sum is 61.

The spelling of 85778414836 in words is "eighty-five billion, seven hundred seventy-eight million, four hundred fourteen thousand, eight hundred thirty-six".