26787611849 has 2 divisors, whose sum is σ = 26787611850. Its totient is φ = 26787611848.

The previous prime is 26787611827. The next prime is 26787611857. The reversal of 26787611849 is 94811678762.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18287693824 + 8499918025 = 135232^2 + 92195^2 .

It is a cyclic number.

It is not a de Polignac number, because 26787611849 - 2¹² = 26787607753 is a prime.

It is a super-2 number, since 2×26787611849² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (26787611869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13393805924 + 13393805925.

It is an arithmetic number, because the mean of its divisors is an integer number (13393805925).

Almost surely, 2^26787611849 is an apocalyptic number.

It is an amenable number.

26787611849 is a deficient number, since it is larger than the sum of its proper divisors (1).

26787611849 is an equidigital number, since it uses as much as digits as its factorization.

26787611849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8128512, while the sum is 59.

The spelling of 26787611849 in words is "twenty-six billion, seven hundred eighty-seven million, six hundred eleven thousand, eight hundred forty-nine".