20872404044 has 24 divisors (see below), whose sum is σ = 38170099968. Its totient is φ = 9967977360.

The previous prime is 20872404043. The next prime is 20872404053. The reversal of 20872404044 is 44040427802.

It is a junction number, because it is equal to n+sod(n) for n = 20872403995 and 20872404013.

It is not an unprimeable number, because it can be changed into a prime (20872404043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100592 + ... + 227735.

It is an arithmetic number, because the mean of its divisors is an integer number (1590420832).

Almost surely, 2^20872404044 is an apocalyptic number.

It is an amenable number.

20872404044 is a deficient number, since it is larger than the sum of its proper divisors (17297695924).

20872404044 is a wasteful number, since it uses less digits than its factorization.

20872404044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329045 (or 329043 counting only the distinct ones).

The product of its (nonzero) digits is 57344, while the sum is 35.

The spelling of 20872404044 in words is "twenty billion, eight hundred seventy-two million, four hundred four thousand, forty-four".