400226705161 has 2 divisors, whose sum is σ = 400226705162. Its totient is φ = 400226705160.

The previous prime is 400226705129. The next prime is 400226705267. The reversal of 400226705161 is 161507622004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 281821895161 + 118404810000 = 530869^2 + 344100^2 .

It is a cyclic number.

It is not a de Polignac number, because 400226705161 - 2⁵ = 400226705129 is a prime.

It is not a weakly prime, because it can be changed into another prime (400226705111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200113352580 + 200113352581.

It is an arithmetic number, because the mean of its divisors is an integer number (200113352581).

Almost surely, 2^400226705161 is an apocalyptic number.

It is an amenable number.

400226705161 is a deficient number, since it is larger than the sum of its proper divisors (1).

400226705161 is an equidigital number, since it uses as much as digits as its factorization.

400226705161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 34.

The spelling of 400226705161 in words is "four hundred billion, two hundred twenty-six million, seven hundred five thousand, one hundred sixty-one".