20726753697191 has 2 divisors, whose sum is σ = 20726753697192. Its totient is φ = 20726753697190.

The previous prime is 20726753697151. The next prime is 20726753697211. The reversal of 20726753697191 is 19179635762702.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20726753697191 - 2¹⁰ = 20726753696167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20726753697151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10363376848595 + 10363376848596.

It is an arithmetic number, because the mean of its divisors is an integer number (10363376848596).

Almost surely, 2^{20726753697191} is an apocalyptic number.

20726753697191 is a deficient number, since it is larger than the sum of its proper divisors (1).

20726753697191 is an equidigital number, since it uses as much as digits as its factorization.

20726753697191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60011280, while the sum is 65.

The spelling of 20726753697191 in words is "twenty trillion, seven hundred twenty-six billion, seven hundred fifty-three million, six hundred ninety-seven thousand, one hundred ninety-one".