400445032343365 has 24 divisors (see below), whose sum is σ = 510472380470112. Its totient is φ = 301506305168640.

The previous prime is 400445032343333. The next prime is 400445032343383. The reversal of 400445032343365 is 563343230544004.

It is a happy number.

It is not a de Polignac number, because 400445032343365 - 2⁵ = 400445032343333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81639450 + ... + 86405380.

It is an arithmetic number, because the mean of its divisors is an integer number (21269682519588).

Almost surely, 2^{400445032343365} is an apocalyptic number.

It is an amenable number.

400445032343365 is a deficient number, since it is larger than the sum of its proper divisors (110027348126747).

400445032343365 is a wasteful number, since it uses less digits than its factorization.

400445032343365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4824117 (or 4824100 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 46.

Adding to 400445032343365 its reverse (563343230544004), we get a palindrome (963788262887369).

The spelling of 400445032343365 in words is "four hundred trillion, four hundred forty-five billion, thirty-two million, three hundred forty-three thousand, three hundred sixty-five".