2109113645629 has 2 divisors, whose sum is σ = 2109113645630. Its totient is φ = 2109113645628.

The previous prime is 2109113645609. The next prime is 2109113645641. The reversal of 2109113645629 is 9265463119012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2032412343129 + 76701302500 = 1425627^2 + 276950^2 .

It is a cyclic number.

It is not a de Polignac number, because 2109113645629 - 2²¹ = 2109111548477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2109113645609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1054556822814 + 1054556822815.

It is an arithmetic number, because the mean of its divisors is an integer number (1054556822815).

Almost surely, 2^{2109113645629} is an apocalyptic number.

It is an amenable number.

2109113645629 is a deficient number, since it is larger than the sum of its proper divisors (1).

2109113645629 is an equidigital number, since it uses as much as digits as its factorization.

2109113645629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 699840, while the sum is 49.

The spelling of 2109113645629 in words is "two trillion, one hundred nine billion, one hundred thirteen million, six hundred forty-five thousand, six hundred twenty-nine".