402546631447271 has 2 divisors, whose sum is σ = 402546631447272. Its totient is φ = 402546631447270.

The previous prime is 402546631447229. The next prime is 402546631447309. The reversal of 402546631447271 is 172744136645204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 402546631447271 - 2¹⁰ = 402546631446247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402546631447201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201273315723635 + 201273315723636.

It is an arithmetic number, because the mean of its divisors is an integer number (201273315723636).

Almost surely, 2^{402546631447271} is an apocalyptic number.

402546631447271 is a deficient number, since it is larger than the sum of its proper divisors (1).

402546631447271 is an equidigital number, since it uses as much as digits as its factorization.

402546631447271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27095040, while the sum is 56.

The spelling of 402546631447271 in words is "four hundred two trillion, five hundred forty-six billion, six hundred thirty-one million, four hundred forty-seven thousand, two hundred seventy-one".