26643053551 has 2 divisors, whose sum is σ = 26643053552. Its totient is φ = 26643053550.

The previous prime is 26643053527. The next prime is 26643053587. The reversal of 26643053551 is 15535034662.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26643053551 - 2¹¹ = 26643051503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26643056551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13321526775 + 13321526776.

It is an arithmetic number, because the mean of its divisors is an integer number (13321526776).

Almost surely, 2^26643053551 is an apocalyptic number.

26643053551 is a deficient number, since it is larger than the sum of its proper divisors (1).

26643053551 is an equidigital number, since it uses as much as digits as its factorization.

26643053551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324000, while the sum is 40.

The spelling of 26643053551 in words is "twenty-six billion, six hundred forty-three million, fifty-three thousand, five hundred fifty-one".