20440056450403 has 8 divisors (see below), whose sum is σ = 21305811163472. Its totient is φ = 19590792303456.

The previous prime is 20440056450391. The next prime is 20440056450449. The reversal of 20440056450403 is 30405465004402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20440056450403 is a prime.

It is a super-2 number, since 2×20440056450403² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20440056454403) 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, 4122639000 + ... + 4122643957.

It is an arithmetic number, because the mean of its divisors is an integer number (2663226395434).

Almost surely, 2^{20440056450403} is an apocalyptic number.

20440056450403 is a deficient number, since it is larger than the sum of its proper divisors (865754713069).

20440056450403 is an equidigital number, since it uses as much as digits as its factorization.

20440056450403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8245283061.

The product of its (nonzero) digits is 230400, while the sum is 37.

The spelling of 20440056450403 in words is "twenty trillion, four hundred forty billion, fifty-six million, four hundred fifty thousand, four hundred three".