860254138508 has 24 divisors (see below), whose sum is σ = 1521393227760. Its totient is φ = 425576203200.

The previous prime is 860254138501. The next prime is 860254138517. The reversal of 860254138508 is 805831452068.

It is not an unprimeable number, because it can be changed into a prime (860254138501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140291 + ... + 1319162.

It is an arithmetic number, because the mean of its divisors is an integer number (63391384490).

Almost surely, 2^860254138508 is an apocalyptic number.

It is an amenable number.

860254138508 is a deficient number, since it is larger than the sum of its proper divisors (661139089252).

860254138508 is a wasteful number, since it uses less digits than its factorization.

860254138508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1461017 (or 1461015 counting only the distinct ones).

The product of its (nonzero) digits is 1843200, while the sum is 50.

The spelling of 860254138508 in words is "eight hundred sixty billion, two hundred fifty-four million, one hundred thirty-eight thousand, five hundred eight".