68881478895 has 32 divisors (see below), whose sum is σ = 122466816000. Its totient is φ = 36733532832.

The previous prime is 68881478891. The next prime is 68881478899. The reversal of 68881478895 is 59887418886.

68881478895 is a `hidden beast` number, since 68 + 8 + 8 + 1 + 478 + 8 + 95 = 666.

It is an interprime number because it is at equal distance from previous prime (68881478891) and next prime (68881478899).

It is not a de Polignac number, because 68881478895 - 2² = 68881478891 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68881478891) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2904054 + ... + 2927676.

It is an arithmetic number, because the mean of its divisors is an integer number (3827088000).

Almost surely, 2^68881478895 is an apocalyptic number.

68881478895 is a deficient number, since it is larger than the sum of its proper divisors (53585337105).

68881478895 is a wasteful number, since it uses less digits than its factorization.

68881478895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45236 (or 45230 counting only the distinct ones).

The product of its digits is 247726080, while the sum is 72.

The spelling of 68881478895 in words is "sixty-eight billion, eight hundred eighty-one million, four hundred seventy-eight thousand, eight hundred ninety-five".