402224231957 has 2 divisors, whose sum is σ = 402224231958. Its totient is φ = 402224231956.

The previous prime is 402224231953. The next prime is 402224231971. The reversal of 402224231957 is 759132422204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 377633601361 + 24590630596 = 614519^2 + 156814^2 .

It is a cyclic number.

It is not a de Polignac number, because 402224231957 - 2² = 402224231953 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402224231953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201112115978 + 201112115979.

It is an arithmetic number, because the mean of its divisors is an integer number (201112115979).

Almost surely, 2^402224231957 is an apocalyptic number.

It is an amenable number.

402224231957 is a deficient number, since it is larger than the sum of its proper divisors (1).

402224231957 is an equidigital number, since it uses as much as digits as its factorization.

402224231957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 241920, while the sum is 41.

The spelling of 402224231957 in words is "four hundred two billion, two hundred twenty-four million, two hundred thirty-one thousand, nine hundred fifty-seven".