68782737965 has 4 divisors (see below), whose sum is σ = 82539285564. Its totient is φ = 55026190368.

The previous prime is 68782737913. The next prime is 68782738103. The reversal of 68782737965 is 56973728786.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7067260489 + 61715477476 = 84067^2 + 248426^2 .

It is a cyclic number.

It is not a de Polignac number, because 68782737965 - 2¹² = 68782733869 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68782737895 and 68782737904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6878273792 + ... + 6878273801.

It is an arithmetic number, because the mean of its divisors is an integer number (20634821391).

Almost surely, 2^68782737965 is an apocalyptic number.

It is an amenable number.

68782737965 is a deficient number, since it is larger than the sum of its proper divisors (13756547599).

68782737965 is a wasteful number, since it uses less digits than its factorization.

68782737965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13756547598.

The product of its digits is 213373440, while the sum is 68.

The spelling of 68782737965 in words is "sixty-eight billion, seven hundred eighty-two million, seven hundred thirty-seven thousand, nine hundred sixty-five".