400432202020 has 24 divisors (see below), whose sum is σ = 877468826304. Its totient is φ = 153208842336.

The previous prime is 400432202011. The next prime is 400432202059. The reversal of 400432202020 is 20202234004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 435251934 + ... + 435252853.

It is an arithmetic number, because the mean of its divisors is an integer number (36561201096).

Almost surely, 2^400432202020 is an apocalyptic number.

It is an amenable number.

400432202020 is an abundant number, since it is smaller than the sum of its proper divisors (477036624284).

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

400432202020 is a wasteful number, since it uses less digits than its factorization.

400432202020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870504819 (or 870504817 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

Adding to 400432202020 its reverse (20202234004), we get a palindrome (420634436024).

The spelling of 400432202020 in words is "four hundred billion, four hundred thirty-two million, two hundred two thousand, twenty".