402521132165213 has 2 divisors, whose sum is σ = 402521132165214. Its totient is φ = 402521132165212.

The previous prime is 402521132165179. The next prime is 402521132165291. The reversal of 402521132165213 is 312561231125204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 310288119310009 + 92233012855204 = 17614997^2 + 9603802^2 .

It is a cyclic number.

It is not a de Polignac number, because 402521132165213 - 2¹² = 402521132161117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402521132162213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201260566082606 + 201260566082607.

It is an arithmetic number, because the mean of its divisors is an integer number (201260566082607).

Almost surely, 2^{402521132165213} is an apocalyptic number.

It is an amenable number.

402521132165213 is a deficient number, since it is larger than the sum of its proper divisors (1).

402521132165213 is an equidigital number, since it uses as much as digits as its factorization.

402521132165213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86400, while the sum is 38.

The spelling of 402521132165213 in words is "four hundred two trillion, five hundred twenty-one billion, one hundred thirty-two million, one hundred sixty-five thousand, two hundred thirteen".