68287310881 has 8 divisors (see below), whose sum is σ = 69256512000. Its totient is φ = 67318315680.

The previous prime is 68287310873. The next prime is 68287310909. The reversal of 68287310881 is 18801378286.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 68287310881 - 2³ = 68287310873 is a prime.

It is a super-2 number, since 2×68287310881² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68287310801) 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, 692085 + ... + 784573.

It is an arithmetic number, because the mean of its divisors is an integer number (8657064000).

Almost surely, 2^68287310881 is an apocalyptic number.

It is an amenable number.

68287310881 is a deficient number, since it is larger than the sum of its proper divisors (969201119).

68287310881 is a wasteful number, since it uses less digits than its factorization.

68287310881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102959.

The product of its (nonzero) digits is 1032192, while the sum is 52.

The spelling of 68287310881 in words is "sixty-eight billion, two hundred eighty-seven million, three hundred ten thousand, eight hundred eighty-one".