26203401551 has 2 divisors, whose sum is σ = 26203401552. Its totient is φ = 26203401550.

The previous prime is 26203401529. The next prime is 26203401557. The reversal of 26203401551 is 15510430262.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26203401551 - 2¹⁰ = 26203400527 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26203401557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13101700775 + 13101700776.

It is an arithmetic number, because the mean of its divisors is an integer number (13101700776).

Almost surely, 2^26203401551 is an apocalyptic number.

26203401551 is a deficient number, since it is larger than the sum of its proper divisors (1).

26203401551 is an equidigital number, since it uses as much as digits as its factorization.

26203401551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 29.

The spelling of 26203401551 in words is "twenty-six billion, two hundred three million, four hundred one thousand, five hundred fifty-one".