85672028864 has 14 divisors (see below), whose sum is σ = 170005432404. Its totient is φ = 42836014400.

The previous prime is 85672028861. The next prime is 85672028867. The reversal of 85672028864 is 46882027658.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (85672028861) and next prime (85672028867).

It is not an unprimeable number, because it can be changed into a prime (85672028861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 669312662 + ... + 669312789.

Almost surely, 2^85672028864 is an apocalyptic number.

It is an amenable number.

85672028864 is a deficient number, since it is larger than the sum of its proper divisors (84333403540).

85672028864 is a wasteful number, since it uses less digits than its factorization.

85672028864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1338625463 (or 1338625453 counting only the distinct ones).

The product of its (nonzero) digits is 10321920, while the sum is 56.

The spelling of 85672028864 in words is "eighty-five billion, six hundred seventy-two million, twenty-eight thousand, eight hundred sixty-four".