2156067366413 has 2 divisors, whose sum is σ = 2156067366414. Its totient is φ = 2156067366412.

The previous prime is 2156067366389. The next prime is 2156067366433. The reversal of 2156067366413 is 3146637606512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1334147432809 + 821919933604 = 1155053^2 + 906598^2 .

It is a cyclic number.

It is not a de Polignac number, because 2156067366413 - 2⁸ = 2156067366157 is a prime.

It is a super-2 number, since 2×2156067366413² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2156067366433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1078033683206 + 1078033683207.

It is an arithmetic number, because the mean of its divisors is an integer number (1078033683207).

Almost surely, 2^{2156067366413} is an apocalyptic number.

It is an amenable number.

2156067366413 is a deficient number, since it is larger than the sum of its proper divisors (1).

2156067366413 is an equidigital number, since it uses as much as digits as its factorization.

2156067366413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3265920, while the sum is 50.

The spelling of 2156067366413 in words is "two trillion, one hundred fifty-six billion, sixty-seven million, three hundred sixty-six thousand, four hundred thirteen".