2543510223491 has 2 divisors, whose sum is σ = 2543510223492. Its totient is φ = 2543510223490.

The previous prime is 2543510223469. The next prime is 2543510223509. The reversal of 2543510223491 is 1943220153452.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2543510223491 - 2¹⁰ = 2543510222467 is a prime.

It is not a weakly prime, because it can be changed into another prime (2543510223431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1271755111745 + 1271755111746.

It is an arithmetic number, because the mean of its divisors is an integer number (1271755111746).

Almost surely, 2^{2543510223491} is an apocalyptic number.

2543510223491 is a deficient number, since it is larger than the sum of its proper divisors (1).

2543510223491 is an equidigital number, since it uses as much as digits as its factorization.

2543510223491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 2543510223491 in words is "two trillion, five hundred forty-three billion, five hundred ten million, two hundred twenty-three thousand, four hundred ninety-one".