402663166001 has 2 divisors, whose sum is σ = 402663166002. Its totient is φ = 402663166000.

The previous prime is 402663165967. The next prime is 402663166021. The reversal of 402663166001 is 100661366204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 394208179600 + 8454986401 = 627860^2 + 91951^2 .

It is a cyclic number.

It is not a de Polignac number, because 402663166001 - 2¹⁴ = 402663149617 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (402663166021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201331583000 + 201331583001.

It is an arithmetic number, because the mean of its divisors is an integer number (201331583001).

Almost surely, 2^402663166001 is an apocalyptic number.

It is an amenable number.

402663166001 is a deficient number, since it is larger than the sum of its proper divisors (1).

402663166001 is an equidigital number, since it uses as much as digits as its factorization.

402663166001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 35.

The spelling of 402663166001 in words is "four hundred two billion, six hundred sixty-three million, one hundred sixty-six thousand, one".