400011412215689 has 2 divisors, whose sum is σ = 400011412215690. Its totient is φ = 400011412215688.

The previous prime is 400011412215497. The next prime is 400011412215707. The reversal of 400011412215689 is 986512214110004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 399992200038025 + 19212177664 = 19999805^2 + 138608^2 .

It is a cyclic number.

It is not a de Polignac number, because 400011412215689 - 2⁸ = 400011412215433 is a prime.

It is not a weakly prime, because it can be changed into another prime (400011412215089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200005706107844 + 200005706107845.

It is an arithmetic number, because the mean of its divisors is an integer number (200005706107845).

Almost surely, 2^{400011412215689} is an apocalyptic number.

It is an amenable number.

400011412215689 is a deficient number, since it is larger than the sum of its proper divisors (1).

400011412215689 is an equidigital number, since it uses as much as digits as its factorization.

400011412215689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138240, while the sum is 44.

The spelling of 400011412215689 in words is "four hundred trillion, eleven billion, four hundred twelve million, two hundred fifteen thousand, six hundred eighty-nine".