2135666453 has 2 divisors, whose sum is σ = 2135666454. Its totient is φ = 2135666452.

The previous prime is 2135666441. The next prime is 2135666471. The reversal of 2135666453 is 3546665312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2092330564 + 43335889 = 45742^2 + 6583^2 .

It is a cyclic number.

It is not a de Polignac number, because 2135666453 - 2⁶ = 2135666389 is a prime.

It is a super-2 number, since 2×2135666453² = 9122142396939202418, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2135666453.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2135666413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1067833226 + 1067833227.

It is an arithmetic number, because the mean of its divisors is an integer number (1067833227).

Almost surely, 2^2135666453 is an apocalyptic number.

It is an amenable number.

2135666453 is a deficient number, since it is larger than the sum of its proper divisors (1).

2135666453 is an equidigital number, since it uses as much as digits as its factorization.

2135666453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 388800, while the sum is 41.

The square root of 2135666453 is about 46213.2713946979. The cubic root of 2135666453 is about 1287.7883006374.

The spelling of 2135666453 in words is "two billion, one hundred thirty-five million, six hundred sixty-six thousand, four hundred fifty-three".