2100512459453 has 2 divisors, whose sum is σ = 2100512459454. Its totient is φ = 2100512459452.

The previous prime is 2100512459449. The next prime is 2100512459489. The reversal of 2100512459453 is 3549542150012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2023571685529 + 76940773924 = 1422523^2 + 277382^2 .

It is a cyclic number.

It is not a de Polignac number, because 2100512459453 - 2² = 2100512459449 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2100512459453.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2100512459443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050256229726 + 1050256229727.

It is an arithmetic number, because the mean of its divisors is an integer number (1050256229727).

Almost surely, 2^{2100512459453} is an apocalyptic number.

It is an amenable number.

2100512459453 is a deficient number, since it is larger than the sum of its proper divisors (1).

2100512459453 is an equidigital number, since it uses as much as digits as its factorization.

2100512459453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216000, while the sum is 41.

The spelling of 2100512459453 in words is "two trillion, one hundred billion, five hundred twelve million, four hundred fifty-nine thousand, four hundred fifty-three".