85143968132 has 6 divisors (see below), whose sum is σ = 149001944238. Its totient is φ = 42571984064.

The previous prime is 85143968113. The next prime is 85143968137. The reversal of 85143968132 is 23186934158.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 43358067076 + 41785901056 = 208226^2 + 204416^2 .

It is not an unprimeable number, because it can be changed into a prime (85143968137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10642996013 + ... + 10642996020.

It is an arithmetic number, because the mean of its divisors is an integer number (24833657373).

Almost surely, 2^85143968132 is an apocalyptic number.

It is an amenable number.

85143968132 is a deficient number, since it is larger than the sum of its proper divisors (63857976106).

85143968132 is a wasteful number, since it uses less digits than its factorization.

85143968132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21285992037 (or 21285992035 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 50.

The spelling of 85143968132 in words is "eighty-five billion, one hundred forty-three million, nine hundred sixty-eight thousand, one hundred thirty-two".