26456886949 has 2 divisors, whose sum is σ = 26456886950. Its totient is φ = 26456886948.

The previous prime is 26456886923. The next prime is 26456887073. The reversal of 26456886949 is 94968865462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13433969025 + 13022917924 = 115905^2 + 114118^2 .

It is a cyclic number.

It is not a de Polignac number, because 26456886949 - 2⁹ = 26456886437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26456836949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13228443474 + 13228443475.

It is an arithmetic number, because the mean of its divisors is an integer number (13228443475).

Almost surely, 2^26456886949 is an apocalyptic number.

It is an amenable number.

26456886949 is a deficient number, since it is larger than the sum of its proper divisors (1).

26456886949 is an equidigital number, since it uses as much as digits as its factorization.

26456886949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 179159040, while the sum is 67.

The spelling of 26456886949 in words is "twenty-six billion, four hundred fifty-six million, eight hundred eighty-six thousand, nine hundred forty-nine".