2778008274031 has 2 divisors, whose sum is σ = 2778008274032. Its totient is φ = 2778008274030.

The previous prime is 2778008274007. The next prime is 2778008274049. The reversal of 2778008274031 is 1304728008772.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2778008274031 is a prime.

It is a super-2 number, since 2×2778008274031² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2778008274091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1389004137015 + 1389004137016.

It is an arithmetic number, because the mean of its divisors is an integer number (1389004137016).

Almost surely, 2^{2778008274031} is an apocalyptic number.

2778008274031 is a deficient number, since it is larger than the sum of its proper divisors (1).

2778008274031 is an equidigital number, since it uses as much as digits as its factorization.

2778008274031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1053696, while the sum is 49.

The spelling of 2778008274031 in words is "two trillion, seven hundred seventy-eight billion, eight million, two hundred seventy-four thousand, thirty-one".