85439653207 has 4 divisors (see below), whose sum is σ = 89936477080. Its totient is φ = 80942829336.

The previous prime is 85439653177. The next prime is 85439653249. The reversal of 85439653207 is 70235693458.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85439653207 - 2¹⁵ = 85439620439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85439653807) 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, 2248411908 + ... + 2248411945.

It is an arithmetic number, because the mean of its divisors is an integer number (22484119270).

Almost surely, 2^85439653207 is an apocalyptic number.

85439653207 is a deficient number, since it is larger than the sum of its proper divisors (4496823873).

85439653207 is a wasteful number, since it uses less digits than its factorization.

85439653207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4496823872.

The product of its (nonzero) digits is 5443200, while the sum is 52.

The spelling of 85439653207 in words is "eighty-five billion, four hundred thirty-nine million, six hundred fifty-three thousand, two hundred seven".