26939420083549 has 2 divisors, whose sum is σ = 26939420083550. Its totient is φ = 26939420083548.

The previous prime is 26939420083501. The next prime is 26939420083559. The reversal of 26939420083549 is 94538002493962.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26261832636900 + 677587446649 = 5124630^2 + 823157^2 .

It is a cyclic number.

It is not a de Polignac number, because 26939420083549 - 2¹¹ = 26939420081501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26939420083559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13469710041774 + 13469710041775.

It is an arithmetic number, because the mean of its divisors is an integer number (13469710041775).

Almost surely, 2^{26939420083549} is an apocalyptic number.

It is an amenable number.

26939420083549 is a deficient number, since it is larger than the sum of its proper divisors (1).

26939420083549 is an equidigital number, since it uses as much as digits as its factorization.

26939420083549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100776960, while the sum is 64.

The spelling of 26939420083549 in words is "twenty-six trillion, nine hundred thirty-nine billion, four hundred twenty million, eighty-three thousand, five hundred forty-nine".