68681400742 has 16 divisors (see below), whose sum is σ = 104811667920. Its totient is φ = 33744660768.

The previous prime is 68681400731. The next prime is 68681400743. The reversal of 68681400742 is 24700418686.

It is a junction number, because it is equal to n+sod(n) for n = 68681400692 and 68681400701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68681400743) 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, 168148 + ... + 406984.

It is an arithmetic number, because the mean of its divisors is an integer number (6550729245).

Almost surely, 2^68681400742 is an apocalyptic number.

68681400742 is a deficient number, since it is larger than the sum of its proper divisors (36130267178).

68681400742 is a wasteful number, since it uses less digits than its factorization.

68681400742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241335.

The product of its (nonzero) digits is 516096, while the sum is 46.

The spelling of 68681400742 in words is "sixty-eight billion, six hundred eighty-one million, four hundred thousand, seven hundred forty-two".