68140746734 has 32 divisors (see below), whose sum is σ = 105426921600. Its totient is φ = 33014545920.

The previous prime is 68140746731. The next prime is 68140746809. The reversal of 68140746734 is 43764704186.

It is a super-2 number, since 2×68140746734² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68140746731) 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, 3887462 + ... + 3904950.

It is an arithmetic number, because the mean of its divisors is an integer number (3294591300).

Almost surely, 2^68140746734 is an apocalyptic number.

68140746734 is a deficient number, since it is larger than the sum of its proper divisors (37286174866).

68140746734 is a wasteful number, since it uses less digits than its factorization.

68140746734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17948.

The product of its (nonzero) digits is 2709504, while the sum is 50.

The spelling of 68140746734 in words is "sixty-eight billion, one hundred forty million, seven hundred forty-six thousand, seven hundred thirty-four".