20481144401 has 4 divisors (see below), whose sum is σ = 20486169600. Its totient is φ = 20476119204.

The previous prime is 20481144337. The next prime is 20481144421. The reversal of 20481144401 is 10444118402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20481144401 - 2⁶ = 20481144337 is a prime.

It is a super-2 number, since 2×20481144401² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20481144421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2506481 + ... + 2514638.

It is an arithmetic number, because the mean of its divisors is an integer number (5121542400).

Almost surely, 2^20481144401 is an apocalyptic number.

It is an amenable number.

20481144401 is a deficient number, since it is larger than the sum of its proper divisors (5025199).

20481144401 is an equidigital number, since it uses as much as digits as its factorization.

20481144401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5025198.

The product of its (nonzero) digits is 4096, while the sum is 29.

The spelling of 20481144401 in words is "twenty billion, four hundred eighty-one million, one hundred forty-four thousand, four hundred one".