26693754121 has 2 divisors, whose sum is σ = 26693754122. Its totient is φ = 26693754120.

The previous prime is 26693754119. The next prime is 26693754163. The reversal of 26693754121 is 12145739662.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22119125625 + 4574628496 = 148725^2 + 67636^2 .

It is a cyclic number.

It is not a de Polignac number, because 26693754121 - 2¹ = 26693754119 is a prime.

Together with 26693754119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (26693754221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13346877060 + 13346877061.

It is an arithmetic number, because the mean of its divisors is an integer number (13346877061).

Almost surely, 2^26693754121 is an apocalyptic number.

It is an amenable number.

26693754121 is a deficient number, since it is larger than the sum of its proper divisors (1).

26693754121 is an equidigital number, since it uses as much as digits as its factorization.

26693754121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 46.

The spelling of 26693754121 in words is "twenty-six billion, six hundred ninety-three million, seven hundred fifty-four thousand, one hundred twenty-one".