2891684468053 has 2 divisors, whose sum is σ = 2891684468054. Its totient is φ = 2891684468052.

The previous prime is 2891684468033. The next prime is 2891684468077. The reversal of 2891684468053 is 3508644861982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2697927796369 + 193756671684 = 1642537^2 + 440178^2 .

It is a cyclic number.

It is not a de Polignac number, because 2891684468053 - 2⁵ = 2891684468021 is a prime.

It is a super-2 number, since 2×2891684468053² (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 (2891684468033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1445842234026 + 1445842234027.

It is an arithmetic number, because the mean of its divisors is an integer number (1445842234027).

Almost surely, 2^{2891684468053} is an apocalyptic number.

It is an amenable number.

2891684468053 is a deficient number, since it is larger than the sum of its proper divisors (1).

2891684468053 is an equidigital number, since it uses as much as digits as its factorization.

2891684468053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 79626240, while the sum is 64.

The spelling of 2891684468053 in words is "two trillion, eight hundred ninety-one billion, six hundred eighty-four million, four hundred sixty-eight thousand, fifty-three".