85143694808 has 8 divisors (see below), whose sum is σ = 159644427780. Its totient is φ = 42571847400.

The previous prime is 85143694807. The next prime is 85143694819. The reversal of 85143694808 is 80849634158.

It is a happy number.

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 (85143694807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5321480918 + ... + 5321480933.

Almost surely, 2^85143694808 is an apocalyptic number.

It is an amenable number.

85143694808 is a deficient number, since it is larger than the sum of its proper divisors (74500732972).

85143694808 is a wasteful number, since it uses less digits than its factorization.

85143694808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10642961857 (or 10642961853 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 56.

The spelling of 85143694808 in words is "eighty-five billion, one hundred forty-three million, six hundred ninety-four thousand, eight hundred eight".