85868131548488 has 8 divisors (see below), whose sum is σ = 161002746653430. Its totient is φ = 42934065774240.

The previous prime is 85868131548467. The next prime is 85868131548533. The reversal of 85868131548488 is 88484513186858.

It can be written as a sum of positive squares in only one way, i.e., 70225774326724 + 15642357221764 = 8380082^2 + 3955042^2 .

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

It is a super-2 number, since 2×85868131548488² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5366758221773 + ... + 5366758221788.

Almost surely, 2^{85868131548488} is an apocalyptic number.

It is an amenable number.

85868131548488 is a deficient number, since it is larger than the sum of its proper divisors (75134615104942).

85868131548488 is a wasteful number, since it uses less digits than its factorization.

85868131548488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10733516443567 (or 10733516443563 counting only the distinct ones).

The product of its digits is 1887436800, while the sum is 77.

The spelling of 85868131548488 in words is "eighty-five trillion, eight hundred sixty-eight billion, one hundred thirty-one million, five hundred forty-eight thousand, four hundred eighty-eight".