400502111232 has 44 divisors (see below), whose sum is σ = 1067484151016. Its totient is φ = 133500702720.

The previous prime is 400502111231. The next prime is 400502111263. The reversal of 400502111232 is 232111205004.

It is a super-2 number, since 2×400502111232² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 400502111199 and 400502111208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400502111231) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 65182819 + ... + 65188962.

Almost surely, 2^400502111232 is an apocalyptic number.

It is an amenable number.

400502111232 is an abundant number, since it is smaller than the sum of its proper divisors (666982039784).

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

400502111232 is a wasteful number, since it uses less digits than its factorization.

400502111232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130371804 (or 130371786 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 400502111232 its reverse (232111205004), we get a palindrome (632613316236).

The spelling of 400502111232 in words is "four hundred billion, five hundred two million, one hundred eleven thousand, two hundred thirty-two".