26254621651 has 2 divisors, whose sum is σ = 26254621652. Its totient is φ = 26254621650.

The previous prime is 26254621583. The next prime is 26254621681. The reversal of 26254621651 is 15612645262.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26254621651 - 2¹⁵ = 26254588883 is a prime.

It is not a weakly prime, because it can be changed into another prime (26254621681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13127310825 + 13127310826.

It is an arithmetic number, because the mean of its divisors is an integer number (13127310826).

Almost surely, 2^26254621651 is an apocalyptic number.

26254621651 is a deficient number, since it is larger than the sum of its proper divisors (1).

26254621651 is an equidigital number, since it uses as much as digits as its factorization.

26254621651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 172800, while the sum is 40.

The spelling of 26254621651 in words is "twenty-six billion, two hundred fifty-four million, six hundred twenty-one thousand, six hundred fifty-one".