68331587457 has 24 divisors (see below), whose sum is σ = 108848119296. Its totient is φ = 37991304288.

The previous prime is 68331587381. The next prime is 68331587507. The reversal of 68331587457 is 75478513386.

68331587457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 68331587457 - 2⁸ = 68331587201 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68331587397 and 68331587406.

It is not an unprimeable number, because it can be changed into a prime (68331583457) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6276193 + ... + 6287070.

It is an arithmetic number, because the mean of its divisors is an integer number (4535338304).

Almost surely, 2^68331587457 is an apocalyptic number.

It is an amenable number.

68331587457 is a deficient number, since it is larger than the sum of its proper divisors (40516531839).

68331587457 is a wasteful number, since it uses less digits than its factorization.

68331587457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12563317 (or 12563310 counting only the distinct ones).

The product of its digits is 16934400, while the sum is 57.

The spelling of 68331587457 in words is "sixty-eight billion, three hundred thirty-one million, five hundred eighty-seven thousand, four hundred fifty-seven".