2691116916133 has 2 divisors, whose sum is σ = 2691116916134. Its totient is φ = 2691116916132.

The previous prime is 2691116916127. The next prime is 2691116916179. The reversal of 2691116916133 is 3316196111962.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2086528248324 + 604588667809 = 1444482^2 + 777553^2 .

It is a cyclic number.

It is not a de Polignac number, because 2691116916133 - 2⁵ = 2691116916101 is a prime.

It is a super-2 number, since 2×2691116916133² (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 (2691116916533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1345558458066 + 1345558458067.

It is an arithmetic number, because the mean of its divisors is an integer number (1345558458067).

Almost surely, 2^{2691116916133} is an apocalyptic number.

It is an amenable number.

2691116916133 is a deficient number, since it is larger than the sum of its proper divisors (1).

2691116916133 is an equidigital number, since it uses as much as digits as its factorization.

2691116916133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 314928, while the sum is 49.

The spelling of 2691116916133 in words is "two trillion, six hundred ninety-one billion, one hundred sixteen million, nine hundred sixteen thousand, one hundred thirty-three".