401543122073 has 2 divisors, whose sum is σ = 401543122074. Its totient is φ = 401543122072.

The previous prime is 401543122031. The next prime is 401543122139. The reversal of 401543122073 is 370221345104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 377158113424 + 24385008649 = 614132^2 + 156157^2 .

It is a cyclic number.

It is not a de Polignac number, because 401543122073 - 2⁶ = 401543122009 is a prime.

It is a super-2 number, since 2×401543122073² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (401543122573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200771561036 + 200771561037.

It is an arithmetic number, because the mean of its divisors is an integer number (200771561037).

Almost surely, 2^401543122073 is an apocalyptic number.

It is an amenable number.

401543122073 is a deficient number, since it is larger than the sum of its proper divisors (1).

401543122073 is an equidigital number, since it uses as much as digits as its factorization.

401543122073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 32.

Adding to 401543122073 its reverse (370221345104), we get a palindrome (771764467177).

The spelling of 401543122073 in words is "four hundred one billion, five hundred forty-three million, one hundred twenty-two thousand, seventy-three".