3178780563940 has 96 divisors (see below), whose sum is σ = 6883853598720. Its totient is φ = 1232377421184.

The previous prime is 3178780563887. The next prime is 3178780563941. The reversal of 3178780563940 is 493650878713.

It is not an unprimeable number, because it can be changed into a prime (3178780563941) 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 31 ways as a sum of consecutive naturals, for example, 65276521 + ... + 65325199.

It is an arithmetic number, because the mean of its divisors is an integer number (71706808320).

Almost surely, 2^{3178780563940} is an apocalyptic number.

It is an amenable number.

3178780563940 is an abundant number, since it is smaller than the sum of its proper divisors (3705073034780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3178780563940 is a wasteful number, since it uses less digits than its factorization.

3178780563940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49409 (or 49407 counting only the distinct ones).

The product of its (nonzero) digits is 30481920, while the sum is 61.

The spelling of 3178780563940 in words is "three trillion, one hundred seventy-eight billion, seven hundred eighty million, five hundred sixty-three thousand, nine hundred forty".