20449201804 has 24 divisors (see below), whose sum is σ = 36149652000. Its totient is φ = 10120913280.

The previous prime is 20449201793. The next prime is 20449201807. The reversal of 20449201804 is 40810294402.

It is a self number, because there is not a number n which added to its sum of digits gives 20449201804.

It is not an unprimeable number, because it can be changed into a prime (20449201807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 435009 + ... + 479719.

It is an arithmetic number, because the mean of its divisors is an integer number (1506235500).

Almost surely, 2^20449201804 is an apocalyptic number.

It is an amenable number.

20449201804 is a deficient number, since it is larger than the sum of its proper divisors (15700450196).

20449201804 is a wasteful number, since it uses less digits than its factorization.

20449201804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45873 (or 45871 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The spelling of 20449201804 in words is "twenty billion, four hundred forty-nine million, two hundred one thousand, eight hundred four".