400050185144 has 24 divisors (see below), whose sum is σ = 796812765240. Its totient is φ = 188258909568.

The previous prime is 400050185141. The next prime is 400050185147. The reversal of 400050185144 is 441581050004.

It is an interprime number because it is at equal distance from previous prime (400050185141) and next prime (400050185147).

It is a self number, because there is not a number n which added to its sum of digits gives 400050185144.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400050185141) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 86513732 + ... + 86518355.

It is an arithmetic number, because the mean of its divisors is an integer number (33200531885).

Almost surely, 2^400050185144 is an apocalyptic number.

It is an amenable number.

400050185144 is a deficient number, since it is larger than the sum of its proper divisors (396762580096).

400050185144 is a wasteful number, since it uses less digits than its factorization.

400050185144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173032127 (or 173032106 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 32.

The spelling of 400050185144 in words is "four hundred billion, fifty million, one hundred eighty-five thousand, one hundred forty-four".