20045223401 has 16 divisors (see below), whose sum is σ = 23001805824. Its totient is φ = 17112032784.

The previous prime is 20045223361. The next prime is 20045223427. The reversal of 20045223401 is 10432254002.

It is a happy number.

It is not a de Polignac number, because 20045223401 - 2⁶ = 20045223337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20045223431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1777286 + ... + 1788528.

It is an arithmetic number, because the mean of its divisors is an integer number (1437612864).

Almost surely, 2^20045223401 is an apocalyptic number.

It is an amenable number.

20045223401 is a deficient number, since it is larger than the sum of its proper divisors (2956582423).

20045223401 is a wasteful number, since it uses less digits than its factorization.

20045223401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12260.

The product of its (nonzero) digits is 1920, while the sum is 23.

Adding to 20045223401 its reverse (10432254002), we get a palindrome (30477477403).

The spelling of 20045223401 in words is "twenty billion, forty-five million, two hundred twenty-three thousand, four hundred one".