11726407397 has 2 divisors, whose sum is σ = 11726407398. Its totient is φ = 11726407396.

The previous prime is 11726407333. The next prime is 11726407439. The reversal of 11726407397 is 79370462711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10647350596 + 1079056801 = 103186^2 + 32849^2 .

It is a cyclic number.

It is not a de Polignac number, because 11726407397 - 2⁶ = 11726407333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11726407097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5863203698 + 5863203699.

It is an arithmetic number, because the mean of its divisors is an integer number (5863203699).

Almost surely, 2^11726407397 is an apocalyptic number.

It is an amenable number.

11726407397 is a deficient number, since it is larger than the sum of its proper divisors (1).

11726407397 is an equidigital number, since it uses as much as digits as its factorization.

11726407397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 444528, while the sum is 47.

The spelling of 11726407397 in words is "eleven billion, seven hundred twenty-six million, four hundred seven thousand, three hundred ninety-seven".