26630521364231 has 2 divisors, whose sum is σ = 26630521364232. Its totient is φ = 26630521364230.

The previous prime is 26630521364201. The next prime is 26630521364299. The reversal of 26630521364231 is 13246312503662.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26630521364231 is a prime.

It is a super-2 number, since 2×26630521364231² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26630521364201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13315260682115 + 13315260682116.

It is an arithmetic number, because the mean of its divisors is an integer number (13315260682116).

Almost surely, 2^{26630521364231} is an apocalyptic number.

26630521364231 is a deficient number, since it is larger than the sum of its proper divisors (1).

26630521364231 is an equidigital number, since it uses as much as digits as its factorization.

26630521364231 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 44.

Adding to 26630521364231 its reverse (13246312503662), we get a palindrome (39876833867893).

The spelling of 26630521364231 in words is "twenty-six trillion, six hundred thirty billion, five hundred twenty-one million, three hundred sixty-four thousand, two hundred thirty-one".