68873782761 has 32 divisors (see below), whose sum is σ = 116929556480. Its totient is φ = 39249169488.

The previous prime is 68873782753. The next prime is 68873782781. The reversal of 68873782761 is 16728737886.

It is not a de Polignac number, because 68873782761 - 2³ = 68873782753 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68873782781) 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, 427111 + ... + 565836.

It is an arithmetic number, because the mean of its divisors is an integer number (3654048640).

Almost surely, 2^68873782761 is an apocalyptic number.

It is an amenable number.

68873782761 is a deficient number, since it is larger than the sum of its proper divisors (48055773719).

68873782761 is a wasteful number, since it uses less digits than its factorization.

68873782761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 993330 (or 993324 counting only the distinct ones).

The product of its digits is 37933056, while the sum is 63.

The spelling of 68873782761 in words is "sixty-eight billion, eight hundred seventy-three million, seven hundred eighty-two thousand, seven hundred sixty-one".