68840625897 has 8 divisors (see below), whose sum is σ = 101986112480. Its totient is φ = 45893750580.

The previous prime is 68840625859. The next prime is 68840625899. The reversal of 68840625897 is 79852604886.

68840625897 is a `hidden beast` number, since 6 + 8 + 8 + 40 + 6 + 2 + 589 + 7 = 666.

It is not a de Polignac number, because 68840625897 - 2¹¹ = 68840623849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68840625899) 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, 1274826379 + ... + 1274826432.

It is an arithmetic number, because the mean of its divisors is an integer number (12748264060).

Almost surely, 2^68840625897 is an apocalyptic number.

It is an amenable number.

68840625897 is a deficient number, since it is larger than the sum of its proper divisors (33145486583).

68840625897 is a wasteful number, since it uses less digits than its factorization.

68840625897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2549652820 (or 2549652814 counting only the distinct ones).

The product of its (nonzero) digits is 46448640, while the sum is 63.

The spelling of 68840625897 in words is "sixty-eight billion, eight hundred forty million, six hundred twenty-five thousand, eight hundred ninety-seven".