85705376672 has 24 divisors (see below), whose sum is σ = 168743429316. Its totient is φ = 42849902592.

The previous prime is 85705376663. The next prime is 85705376689. The reversal of 85705376672 is 27667350758.

It can be written as a sum of positive squares in 2 ways, for example, as 83592687376 + 2112689296 = 289124^2 + 45964^2 .

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, 467168 + ... + 624224.

Almost surely, 2^85705376672 is an apocalyptic number.

It is an amenable number.

85705376672 is a deficient number, since it is larger than the sum of its proper divisors (83038052644).

85705376672 is a wasteful number, since it uses less digits than its factorization.

85705376672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174120 (or 174112 counting only the distinct ones).

The product of its (nonzero) digits is 14817600, while the sum is 56.

The spelling of 85705376672 in words is "eighty-five billion, seven hundred five million, three hundred seventy-six thousand, six hundred seventy-two".