26931413953 has 2 divisors, whose sum is σ = 26931413954. Its totient is φ = 26931413952.

The previous prime is 26931413947. The next prime is 26931413987. The reversal of 26931413953 is 35931413962.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17269113744 + 9662300209 = 131412^2 + 98297^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26931413953 is a prime.

It is not a weakly prime, because it can be changed into another prime (26931453953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13465706976 + 13465706977.

It is an arithmetic number, because the mean of its divisors is an integer number (13465706977).

Almost surely, 2^26931413953 is an apocalyptic number.

It is an amenable number.

26931413953 is a deficient number, since it is larger than the sum of its proper divisors (1).

26931413953 is an equidigital number, since it uses as much as digits as its factorization.

26931413953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 524880, while the sum is 46.

Subtracting 26931413953 from its reverse (35931413962), we obtain a palindrome (9000000009).

The spelling of 26931413953 in words is "twenty-six billion, nine hundred thirty-one million, four hundred thirteen thousand, nine hundred fifty-three".