85644959323 has 16 divisors (see below), whose sum is σ = 107064435456. Its totient is φ = 66557391840.

The previous prime is 85644959317. The next prime is 85644959329. The reversal of 85644959323 is 32395944658.

It is an interprime number because it is at equal distance from previous prime (85644959317) and next prime (85644959329).

It is a cyclic number.

It is not a de Polignac number, because 85644959323 - 2²¹ = 85642862171 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85644959329) 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, 1462261 + ... + 1519702.

It is an arithmetic number, because the mean of its divisors is an integer number (6691527216).

Almost surely, 2^85644959323 is an apocalyptic number.

85644959323 is a deficient number, since it is larger than the sum of its proper divisors (21419476133).

85644959323 is a wasteful number, since it uses less digits than its factorization.

85644959323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2982354.

The product of its digits is 27993600, while the sum is 58.

The spelling of 85644959323 in words is "eighty-five billion, six hundred forty-four million, nine hundred fifty-nine thousand, three hundred twenty-three".