43845537106453 has 2 divisors, whose sum is σ = 43845537106454. Its totient is φ = 43845537106452.

The previous prime is 43845537106451. The next prime is 43845537106549. The reversal of 43845537106453 is 35460173554834.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43774869922564 + 70667183889 = 6616258^2 + 265833^2 .

It is a cyclic number.

It is not a de Polignac number, because 43845537106453 - 2¹ = 43845537106451 is a prime.

It is a super-2 number, since 2×43845537106453² (a number of 28 digits) contains 22 as substring.

Together with 43845537106451, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43845537106451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21922768553226 + 21922768553227.

It is an arithmetic number, because the mean of its divisors is an integer number (21922768553227).

Almost surely, 2^{43845537106453} is an apocalyptic number.

It is an amenable number.

43845537106453 is a deficient number, since it is larger than the sum of its proper divisors (1).

43845537106453 is an equidigital number, since it uses as much as digits as its factorization.

43845537106453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576000, while the sum is 58.

The spelling of 43845537106453 in words is "forty-three trillion, eight hundred forty-five billion, five hundred thirty-seven million, one hundred six thousand, four hundred fifty-three".