26783936273 has 2 divisors, whose sum is σ = 26783936274. Its totient is φ = 26783936272.

The previous prime is 26783936251. The next prime is 26783936297. The reversal of 26783936273 is 37263938762.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26783613649 + 322624 = 163657^2 + 568^2 .

It is a cyclic number.

It is not a de Polignac number, because 26783936273 - 2⁶ = 26783936209 is a prime.

It is a super-2 number, since 2×26783936273² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (26783966273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13391968136 + 13391968137.

It is an arithmetic number, because the mean of its divisors is an integer number (13391968137).

Almost surely, 2^26783936273 is an apocalyptic number.

It is an amenable number.

26783936273 is a deficient number, since it is larger than the sum of its proper divisors (1).

26783936273 is an equidigital number, since it uses as much as digits as its factorization.

26783936273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13716864, while the sum is 56.

The spelling of 26783936273 in words is "twenty-six billion, seven hundred eighty-three million, nine hundred thirty-six thousand, two hundred seventy-three".