85365978668 has 12 divisors (see below), whose sum is σ = 149396350320. Its totient is φ = 42681307152.

The previous prime is 85365978667. The next prime is 85365978689. The reversal of 85365978668 is 86687956358.

It is not an unprimeable number, because it can be changed into a prime (85365978667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 302696 + ... + 512207.

It is an arithmetic number, because the mean of its divisors is an integer number (12449695860).

Almost surely, 2^85365978668 is an apocalyptic number.

It is an amenable number.

85365978668 is a deficient number, since it is larger than the sum of its proper divisors (64030371652).

85365978668 is a wasteful number, since it uses less digits than its factorization.

85365978668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841096 (or 841094 counting only the distinct ones).

The product of its digits is 522547200, while the sum is 71.

The spelling of 85365978668 in words is "eighty-five billion, three hundred sixty-five million, nine hundred seventy-eight thousand, six hundred sixty-eight".