68490000863 has 4 divisors (see below), whose sum is σ = 68837666040. Its totient is φ = 68142335688.

The previous prime is 68490000847. The next prime is 68490000883. The reversal of 68490000863 is 36800009486.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68490000863 - 2⁴ = 68490000847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68490000823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173832293 + ... + 173832686.

It is an arithmetic number, because the mean of its divisors is an integer number (17209416510).

Almost surely, 2^68490000863 is an apocalyptic number.

68490000863 is a deficient number, since it is larger than the sum of its proper divisors (347665177).

68490000863 is a wasteful number, since it uses less digits than its factorization.

68490000863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347665176.

The product of its (nonzero) digits is 248832, while the sum is 44.

The spelling of 68490000863 in words is "sixty-eight billion, four hundred ninety million, eight hundred sixty-three", and thus it is an aban number.