400450543551444 has 24 divisors (see below), whose sum is σ = 957174469953408. Its totient is φ = 130227819040960.

The previous prime is 400450543551437. The next prime is 400450543551449. The reversal of 400450543551444 is 444155345054004.

It is a junction number, because it is equal to n+sod(n) for n = 400450543551393 and 400450543551402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400450543551449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 406961934012 + ... + 406961934995.

It is an arithmetic number, because the mean of its divisors is an integer number (39882269581392).

Almost surely, 2^{400450543551444} is an apocalyptic number.

It is an amenable number.

400450543551444 is an abundant number, since it is smaller than the sum of its proper divisors (556723926401964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400450543551444 is a wasteful number, since it uses less digits than its factorization.

400450543551444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813923869055 (or 813923869053 counting only the distinct ones).

The product of its (nonzero) digits is 7680000, while the sum is 48.

The spelling of 400450543551444 in words is "four hundred trillion, four hundred fifty billion, five hundred forty-three million, five hundred fifty-one thousand, four hundred forty-four".