3117778779 has 16 divisors (see below), whose sum is σ = 4301680640. Its totient is φ = 2006527680.

The previous prime is 3117778739. The next prime is 3117778789. The reversal of 3117778779 is 9778777113.

It is not a de Polignac number, because 3117778779 - 2¹⁵ = 3117746011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3117778709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2947 + ... + 79020.

It is an arithmetic number, because the mean of its divisors is an integer number (268855040).

Almost surely, 2^3117778779 is an apocalyptic number.

3117778779 is a deficient number, since it is larger than the sum of its proper divisors (1183901861).

3117778779 is a wasteful number, since it uses less digits than its factorization.

3117778779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82410.

The product of its digits is 3630312, while the sum is 57.

The square root of 3117778779 is about 55837.0735175116. The cubic root of 3117778779 is about 1460.8818683968.

The spelling of 3117778779 in words is "three billion, one hundred seventeen million, seven hundred seventy-eight thousand, seven hundred seventy-nine".