868631607523 has 8 divisors (see below), whose sum is σ = 873717962400. Its totient is φ = 863546004288.

The previous prime is 868631607517. The next prime is 868631607577. The reversal of 868631607523 is 325706136868.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-868631607523 is a prime.

It is a super-2 number, since 2×868631607523² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (868631607593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2220183 + ... + 2581951.

It is an arithmetic number, because the mean of its divisors is an integer number (109214745300).

Almost surely, 2^868631607523 is an apocalyptic number.

868631607523 is a deficient number, since it is larger than the sum of its proper divisors (5086354877).

868631607523 is a wasteful number, since it uses less digits than its factorization.

868631607523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375821.

The product of its (nonzero) digits is 8709120, while the sum is 55.

The spelling of 868631607523 in words is "eight hundred sixty-eight billion, six hundred thirty-one million, six hundred seven thousand, five hundred twenty-three".