401343621053 has 2 divisors, whose sum is σ = 401343621054. Its totient is φ = 401343621052.

The previous prime is 401343621043. The next prime is 401343621137. The reversal of 401343621053 is 350126343104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 228983304484 + 172360316569 = 478522^2 + 415163^2 .

It is a cyclic number.

It is not a de Polignac number, because 401343621053 - 2⁴ = 401343621037 is a prime.

It is a super-2 number, since 2×401343621053² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401343621043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200671810526 + 200671810527.

It is an arithmetic number, because the mean of its divisors is an integer number (200671810527).

Almost surely, 2^401343621053 is an apocalyptic number.

It is an amenable number.

401343621053 is a deficient number, since it is larger than the sum of its proper divisors (1).

401343621053 is an equidigital number, since it uses as much as digits as its factorization.

401343621053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 32.

Adding to 401343621053 its reverse (350126343104), we get a palindrome (751469964157).

The spelling of 401343621053 in words is "four hundred one billion, three hundred forty-three million, six hundred twenty-one thousand, fifty-three".