68861025131 has 2 divisors, whose sum is σ = 68861025132. Its totient is φ = 68861025130.

The previous prime is 68861025109. The next prime is 68861025157. The reversal of 68861025131 is 13152016886.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68861025131 is a prime.

It is a super-2 number, since 2×68861025131² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (68861025731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34430512565 + 34430512566.

It is an arithmetic number, because the mean of its divisors is an integer number (34430512566).

Almost surely, 2^68861025131 is an apocalyptic number.

68861025131 is a deficient number, since it is larger than the sum of its proper divisors (1).

68861025131 is an equidigital number, since it uses as much as digits as its factorization.

68861025131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 41.

The spelling of 68861025131 in words is "sixty-eight billion, eight hundred sixty-one million, twenty-five thousand, one hundred thirty-one".