85143687064 has 8 divisors (see below), whose sum is σ = 159644413260. Its totient is φ = 42571843528.

The previous prime is 85143687011. The next prime is 85143687067. The reversal of 85143687064 is 46078634158.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85143687067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5321480434 + ... + 5321480449.

Almost surely, 2^85143687064 is an apocalyptic number.

It is an amenable number.

85143687064 is a deficient number, since it is larger than the sum of its proper divisors (74500726196).

85143687064 is a wasteful number, since it uses less digits than its factorization.

85143687064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10642960889 (or 10642960885 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 52.

The spelling of 85143687064 in words is "eighty-five billion, one hundred forty-three million, six hundred eighty-seven thousand, sixty-four".