404221542344357 has 2 divisors, whose sum is σ = 404221542344358. Its totient is φ = 404221542344356.

The previous prime is 404221542344329. The next prime is 404221542344407. The reversal of 404221542344357 is 753443245122404.

It is an a-pointer prime, because the next prime (404221542344407) can be obtained adding 404221542344357 to its sum of digits (50).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 285856150812961 + 118365391531396 = 16907281^2 + 10879586^2 .

It is a cyclic number.

It is not a de Polignac number, because 404221542344357 - 2³² = 404217247377061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404221542344327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202110771172178 + 202110771172179.

It is an arithmetic number, because the mean of its divisors is an integer number (202110771172179).

Almost surely, 2^{404221542344357} is an apocalyptic number.

It is an amenable number.

404221542344357 is a deficient number, since it is larger than the sum of its proper divisors (1).

404221542344357 is an equidigital number, since it uses as much as digits as its factorization.

404221542344357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12902400, while the sum is 50.

The spelling of 404221542344357 in words is "four hundred four trillion, two hundred twenty-one billion, five hundred forty-two million, three hundred forty-four thousand, three hundred fifty-seven".