68696043761 has 4 divisors (see below), whose sum is σ = 68697975024. Its totient is φ = 68694112500.

The previous prime is 68696043751. The next prime is 68696043781. The reversal of 68696043761 is 16734069686.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68696043761 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68696043697 and 68696043706.

It is not an unprimeable number, because it can be changed into a prime (68696043751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 911255 + ... + 983756.

It is an arithmetic number, because the mean of its divisors is an integer number (17174493756).

Almost surely, 2^68696043761 is an apocalyptic number.

It is an amenable number.

68696043761 is a deficient number, since it is larger than the sum of its proper divisors (1931263).

68696043761 is a wasteful number, since it uses less digits than its factorization.

68696043761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1931262.

The product of its (nonzero) digits is 7838208, while the sum is 56.

The spelling of 68696043761 in words is "sixty-eight billion, six hundred ninety-six million, forty-three thousand, seven hundred sixty-one".