68780903409 has 8 divisors (see below), whose sum is σ = 101897634720. Its totient is φ = 45853935588.

The previous prime is 68780903353. The next prime is 68780903437. The reversal of 68780903409 is 90430908786.

It is not a de Polignac number, because 68780903409 - 2⁷ = 68780903281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68780903489) 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, 1273720407 + ... + 1273720460.

It is an arithmetic number, because the mean of its divisors is an integer number (12737204340).

Almost surely, 2^68780903409 is an apocalyptic number.

It is an amenable number.

68780903409 is a deficient number, since it is larger than the sum of its proper divisors (33116731311).

68780903409 is a wasteful number, since it uses less digits than its factorization.

68780903409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2547440876 (or 2547440870 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The spelling of 68780903409 in words is "sixty-eight billion, seven hundred eighty million, nine hundred three thousand, four hundred nine".