26913782729 has 2 divisors, whose sum is σ = 26913782730. Its totient is φ = 26913782728.

The previous prime is 26913782681. The next prime is 26913782737. The reversal of 26913782729 is 92728731962.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26033177104 + 880605625 = 161348^2 + 29675^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26913782729 is a prime.

It is not a weakly prime, because it can be changed into another prime (26913782759) 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, 13456891364 + 13456891365.

It is an arithmetic number, because the mean of its divisors is an integer number (13456891365).

Almost surely, 2^26913782729 is an apocalyptic number.

It is an amenable number.

26913782729 is a deficient number, since it is larger than the sum of its proper divisors (1).

26913782729 is an equidigital number, since it uses as much as digits as its factorization.

26913782729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4572288, while the sum is 56.

The spelling of 26913782729 in words is "twenty-six billion, nine hundred thirteen million, seven hundred eighty-two thousand, seven hundred twenty-nine".