26487438749 has 2 divisors, whose sum is σ = 26487438750. Its totient is φ = 26487438748.

The previous prime is 26487438689. The next prime is 26487438767. The reversal of 26487438749 is 94783478462.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23688288100 + 2799150649 = 153910^2 + 52907^2 .

It is a cyclic number.

It is not a de Polignac number, because 26487438749 - 2⁸ = 26487438493 is a prime.

It is a super-2 number, since 2×26487438749² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26487438691 and 26487438700.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26487438049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13243719374 + 13243719375.

It is an arithmetic number, because the mean of its divisors is an integer number (13243719375).

Almost surely, 2^26487438749 is an apocalyptic number.

It is an amenable number.

26487438749 is a deficient number, since it is larger than the sum of its proper divisors (1).

26487438749 is an equidigital number, since it uses as much as digits as its factorization.

26487438749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 65028096, while the sum is 62.

The spelling of 26487438749 in words is "twenty-six billion, four hundred eighty-seven million, four hundred thirty-eight thousand, seven hundred forty-nine".