20440555410 has 48 divisors (see below), whose sum is σ = 53922532608. Its totient is φ = 4955285280.

The previous prime is 20440555403. The next prime is 20440555411. The reversal of 20440555410 is 1455504402.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (20440555411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2811874 + ... + 2819133.

It is an arithmetic number, because the mean of its divisors is an integer number (1123386096).

Almost surely, 2^20440555410 is an apocalyptic number.

20440555410 is an abundant number, since it is smaller than the sum of its proper divisors (33481977198).

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

20440555410 is a wasteful number, since it uses less digits than its factorization.

20440555410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5631039 (or 5631028 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 30.

The spelling of 20440555410 in words is "twenty billion, four hundred forty million, five hundred fifty-five thousand, four hundred ten".