68036779461 has 32 divisors (see below), whose sum is σ = 104064307200. Its totient is φ = 38732488704.

The previous prime is 68036779457. The next prime is 68036779519. The reversal of 68036779461 is 16497763086.

It is not a de Polignac number, because 68036779461 - 2² = 68036779457 is a prime.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68036777461) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6321861 + ... + 6332613.

It is an arithmetic number, because the mean of its divisors is an integer number (3252009600).

Almost surely, 2^68036779461 is an apocalyptic number.

It is an amenable number.

68036779461 is a deficient number, since it is larger than the sum of its proper divisors (36027527739).

68036779461 is a wasteful number, since it uses less digits than its factorization.

68036779461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11865.

The product of its (nonzero) digits is 9144576, while the sum is 57.

The spelling of 68036779461 in words is "sixty-eight billion, thirty-six million, seven hundred seventy-nine thousand, four hundred sixty-one".