68750631257 has 16 divisors (see below), whose sum is σ = 85765392000. Its totient is φ = 53540471040.

The previous prime is 68750631247. The next prime is 68750631329. The reversal of 68750631257 is 75213605786.

It is not a de Polignac number, because 68750631257 - 2¹⁶ = 68750565721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68750631247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129632 + ... + 392817.

It is an arithmetic number, because the mean of its divisors is an integer number (5360337000).

Almost surely, 2^68750631257 is an apocalyptic number.

It is an amenable number.

68750631257 is a deficient number, since it is larger than the sum of its proper divisors (17014760743).

68750631257 is a wasteful number, since it uses less digits than its factorization.

68750631257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524176.

The product of its (nonzero) digits is 2116800, while the sum is 50.

It can be divided in two parts, 68750 and 631257, that added together give a palindrome (700007).

The spelling of 68750631257 in words is "sixty-eight billion, seven hundred fifty million, six hundred thirty-one thousand, two hundred fifty-seven".