26454556543 has 2 divisors, whose sum is σ = 26454556544. Its totient is φ = 26454556542.

The previous prime is 26454556493. The next prime is 26454556573. The reversal of 26454556543 is 34565545462.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26454556543 - 2⁹ = 26454556031 is a prime.

It is a super-2 number, since 2×26454556543² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26454556573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13227278271 + 13227278272.

It is an arithmetic number, because the mean of its divisors is an integer number (13227278272).

Almost surely, 2^26454556543 is an apocalyptic number.

26454556543 is a deficient number, since it is larger than the sum of its proper divisors (1).

26454556543 is an equidigital number, since it uses as much as digits as its factorization.

26454556543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640000, while the sum is 49.

The spelling of 26454556543 in words is "twenty-six billion, four hundred fifty-four million, five hundred fifty-six thousand, five hundred forty-three".