402251152217 has 2 divisors, whose sum is σ = 402251152218. Its totient is φ = 402251152216.

The previous prime is 402251152169. The next prime is 402251152229. The reversal of 402251152217 is 712251152204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 380122804681 + 22128347536 = 616541^2 + 148756^2 .

It is a cyclic number.

It is not a de Polignac number, because 402251152217 - 2⁸ = 402251151961 is a prime.

It is not a weakly prime, because it can be changed into another prime (402251152267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201125576108 + 201125576109.

It is an arithmetic number, because the mean of its divisors is an integer number (201125576109).

Almost surely, 2^402251152217 is an apocalyptic number.

It is an amenable number.

402251152217 is a deficient number, since it is larger than the sum of its proper divisors (1).

402251152217 is an equidigital number, since it uses as much as digits as its factorization.

402251152217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11200, while the sum is 32.

The spelling of 402251152217 in words is "four hundred two billion, two hundred fifty-one million, one hundred fifty-two thousand, two hundred seventeen".