401974204453 has 2 divisors, whose sum is σ = 401974204454. Its totient is φ = 401974204452.

The previous prime is 401974204447. The next prime is 401974204487. The reversal of 401974204453 is 354402479104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 382717924164 + 19256280289 = 618642^2 + 138767^2 .

It is a cyclic number.

It is not a de Polignac number, because 401974204453 - 2⁵ = 401974204421 is a prime.

It is a super-2 number, since 2×401974204453² (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 (401974204553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200987102226 + 200987102227.

It is an arithmetic number, because the mean of its divisors is an integer number (200987102227).

Almost surely, 2^401974204453 is an apocalyptic number.

It is an amenable number.

401974204453 is a deficient number, since it is larger than the sum of its proper divisors (1).

401974204453 is an equidigital number, since it uses as much as digits as its factorization.

401974204453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 483840, while the sum is 43.

The spelling of 401974204453 in words is "four hundred one billion, nine hundred seventy-four million, two hundred four thousand, four hundred fifty-three".