402556424655233 has 2 divisors, whose sum is σ = 402556424655234. Its totient is φ = 402556424655232.

The previous prime is 402556424655191. The next prime is 402556424655269. The reversal of 402556424655233 is 332556424655204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 402537090308929 + 19334346304 = 20063327^2 + 139048^2 .

It is a cyclic number.

It is not a de Polignac number, because 402556424655233 - 2⁸ = 402556424654977 is a prime.

It is not a weakly prime, because it can be changed into another prime (402556424655293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201278212327616 + 201278212327617.

It is an arithmetic number, because the mean of its divisors is an integer number (201278212327617).

Almost surely, 2^{402556424655233} is an apocalyptic number.

It is an amenable number.

402556424655233 is a deficient number, since it is larger than the sum of its proper divisors (1).

402556424655233 is an equidigital number, since it uses as much as digits as its factorization.

402556424655233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680000, while the sum is 56.

The spelling of 402556424655233 in words is "four hundred two trillion, five hundred fifty-six billion, four hundred twenty-four million, six hundred fifty-five thousand, two hundred thirty-three".