400033221140 has 96 divisors (see below), whose sum is σ = 1023403315200. Its totient is φ = 128290780800.

The previous prime is 400033221139. The next prime is 400033221173. The reversal of 400033221140 is 41122330004.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 741686 + ... + 1161965.

It is an arithmetic number, because the mean of its divisors is an integer number (10660451200).

Almost surely, 2^400033221140 is an apocalyptic number.

It is an amenable number.

400033221140 is an abundant number, since it is smaller than the sum of its proper divisors (623370094060).

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

400033221140 is a wasteful number, since it uses less digits than its factorization.

400033221140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1903765 (or 1903763 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 400033221140 its reverse (41122330004), we get a palindrome (441155551144).

The spelling of 400033221140 in words is "four hundred billion, thirty-three million, two hundred twenty-one thousand, one hundred forty".