20400022432044 has 96 divisors (see below), whose sum is σ = 56056235175360. Its totient is φ = 6393587198976.

The previous prime is 20400022432001. The next prime is 20400022432063. The reversal of 20400022432044 is 44023422000402.

20400022432044 is a `hidden beast` number, since 2 + 0 + 400 + 0 + 224 + 32 + 0 + 4 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 20400022431999 and 20400022432017.

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, 3741787 + ... + 7402770.

It is an arithmetic number, because the mean of its divisors is an integer number (583919116410).

Almost surely, 2^{20400022432044} is an apocalyptic number.

It is an amenable number.

20400022432044 is an abundant number, since it is smaller than the sum of its proper divisors (35656212743316).

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

20400022432044 is a wasteful number, since it uses less digits than its factorization.

20400022432044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11145584 (or 11145576 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 27.

Adding to 20400022432044 its reverse (44023422000402), we get a palindrome (64423444432446).

The spelling of 20400022432044 in words is "twenty trillion, four hundred billion, twenty-two million, four hundred thirty-two thousand, forty-four".