85644400468 has 24 divisors (see below), whose sum is σ = 163516520160. Its totient is φ = 38926041120.

The previous prime is 85644400447. The next prime is 85644400483. The reversal of 85644400468 is 86400444658.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 502555 + ... + 651037.

It is an arithmetic number, because the mean of its divisors is an integer number (6813188340).

Almost surely, 2^85644400468 is an apocalyptic number.

It is an amenable number.

85644400468 is a deficient number, since it is larger than the sum of its proper divisors (77872119692).

85644400468 is a wasteful number, since it uses less digits than its factorization.

85644400468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161607 (or 161605 counting only the distinct ones).

The product of its (nonzero) digits is 2949120, while the sum is 49.

The spelling of 85644400468 in words is "eighty-five billion, six hundred forty-four million, four hundred thousand, four hundred sixty-eight".