402564332197 has 2 divisors, whose sum is σ = 402564332198. Its totient is φ = 402564332196.

The previous prime is 402564332171. The next prime is 402564332207. The reversal of 402564332197 is 791233465204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 396155689281 + 6408642916 = 629409^2 + 80054^2 .

It is a cyclic number.

It is not a de Polignac number, because 402564332197 - 2¹⁵ = 402564299429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402564332147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201282166098 + 201282166099.

It is an arithmetic number, because the mean of its divisors is an integer number (201282166099).

Almost surely, 2^402564332197 is an apocalyptic number.

It is an amenable number.

402564332197 is a deficient number, since it is larger than the sum of its proper divisors (1).

402564332197 is an equidigital number, since it uses as much as digits as its factorization.

402564332197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1088640, while the sum is 46.

The spelling of 402564332197 in words is "four hundred two billion, five hundred sixty-four million, three hundred thirty-two thousand, one hundred ninety-seven".