2643333540493 has 2 divisors, whose sum is σ = 2643333540494. Its totient is φ = 2643333540492.

The previous prime is 2643333540467. The next prime is 2643333540509. The reversal of 2643333540493 is 3940453333462.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2459809550884 + 183523989609 = 1568378^2 + 428397^2 .

It is a cyclic number.

It is not a de Polignac number, because 2643333540493 - 2¹⁷ = 2643333409421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2643333544493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1321666770246 + 1321666770247.

It is an arithmetic number, because the mean of its divisors is an integer number (1321666770247).

Almost surely, 2^{2643333540493} is an apocalyptic number.

It is an amenable number.

2643333540493 is a deficient number, since it is larger than the sum of its proper divisors (1).

2643333540493 is an equidigital number, since it uses as much as digits as its factorization.

2643333540493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8398080, while the sum is 49.

The spelling of 2643333540493 in words is "two trillion, six hundred forty-three billion, three hundred thirty-three million, five hundred forty thousand, four hundred ninety-three".