400126714220771 has 2 divisors, whose sum is σ = 400126714220772. Its totient is φ = 400126714220770.

The previous prime is 400126714220767. The next prime is 400126714220837. The reversal of 400126714220771 is 177022417621004.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 400126714220771 - 2² = 400126714220767 is a prime.

It is a super-2 number, since 2×400126714220771² (a number of 30 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (400126714220671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200063357110385 + 200063357110386.

It is an arithmetic number, because the mean of its divisors is an integer number (200063357110386).

Almost surely, 2^{400126714220771} is an apocalyptic number.

400126714220771 is a deficient number, since it is larger than the sum of its proper divisors (1).

400126714220771 is an equidigital number, since it uses as much as digits as its factorization.

400126714220771 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 263424, while the sum is 44.

The spelling of 400126714220771 in words is "four hundred trillion, one hundred twenty-six billion, seven hundred fourteen million, two hundred twenty thousand, seven hundred seventy-one".