22001404645 has 16 divisors (see below), whose sum is σ = 28908138240. Its totient is φ = 15941966400.

The previous prime is 22001404643. The next prime is 22001404651. The reversal of 22001404645 is 54640410022.

It is not a de Polignac number, because 22001404645 - 2¹ = 22001404643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22001404643) 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, 723150 + ... + 752959.

It is an arithmetic number, because the mean of its divisors is an integer number (1806758640).

Almost surely, 2^22001404645 is an apocalyptic number.

It is an amenable number.

22001404645 is a deficient number, since it is larger than the sum of its proper divisors (6906733595).

22001404645 is a wasteful number, since it uses less digits than its factorization.

22001404645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1476396.

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 22001404645 its reverse (54640410022), we get a palindrome (76641814667).

The spelling of 22001404645 in words is "twenty-two billion, one million, four hundred four thousand, six hundred forty-five".