85667238646 has 32 divisors (see below), whose sum is σ = 149639166720. Its totient is φ = 36370605600.

The previous prime is 85667238617. The next prime is 85667238647. The reversal of 85667238646 is 64683276658.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85667238647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1413601 + ... + 1472956.

It is an arithmetic number, because the mean of its divisors is an integer number (4676223960).

Almost surely, 2^85667238646 is an apocalyptic number.

85667238646 is a deficient number, since it is larger than the sum of its proper divisors (63971928074).

85667238646 is a wasteful number, since it uses less digits than its factorization.

85667238646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2886660.

The product of its digits is 69672960, while the sum is 61.

The spelling of 85667238646 in words is "eighty-five billion, six hundred sixty-seven million, two hundred thirty-eight thousand, six hundred forty-six".