3178780563941 has 2 divisors, whose sum is σ = 3178780563942. Its totient is φ = 3178780563940.

The previous prime is 3178780563887. The next prime is 3178780563977. The reversal of 3178780563941 is 1493650878713.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2329756533316 + 849024030625 = 1526354^2 + 921425^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3178780563941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3178780763941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1589390281970 + 1589390281971.

It is an arithmetic number, because the mean of its divisors is an integer number (1589390281971).

Almost surely, 2^{3178780563941} is an apocalyptic number.

It is an amenable number.

3178780563941 is a deficient number, since it is larger than the sum of its proper divisors (1).

3178780563941 is an equidigital number, since it uses as much as digits as its factorization.

3178780563941 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30481920, while the sum is 62.

The spelling of 3178780563941 in words is "three trillion, one hundred seventy-eight billion, seven hundred eighty million, five hundred sixty-three thousand, nine hundred forty-one".