26806934503 has 2 divisors, whose sum is σ = 26806934504. Its totient is φ = 26806934502.

The previous prime is 26806934489. The next prime is 26806934509. The reversal of 26806934503 is 30543960862.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26806934503 is a prime.

It is a super-3 number, since 3×26806934503³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26806934509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13403467251 + 13403467252.

It is an arithmetic number, because the mean of its divisors is an integer number (13403467252).

Almost surely, 2^26806934503 is an apocalyptic number.

26806934503 is a deficient number, since it is larger than the sum of its proper divisors (1).

26806934503 is an equidigital number, since it uses as much as digits as its factorization.

26806934503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 933120, while the sum is 46.

The spelling of 26806934503 in words is "twenty-six billion, eight hundred six million, nine hundred thirty-four thousand, five hundred three".