20004226464 has 48 divisors (see below), whose sum is σ = 52518533760. Its totient is φ = 6667130880.

The previous prime is 20004226439. The next prime is 20004226469. The reversal of 20004226464 is 46462240002.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (20004226469) 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, 1112457 + ... + 1130295.

It is an arithmetic number, because the mean of its divisors is an integer number (1094136120).

Almost surely, 2^20004226464 is an apocalyptic number.

20004226464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20004226464 is an abundant number, since it is smaller than the sum of its proper divisors (32514307296).

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

20004226464 is a wasteful number, since it uses less digits than its factorization.

20004226464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29533 (or 29525 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 20004226464 its reverse (46462240002), we get a palindrome (66466466466).

The spelling of 20004226464 in words is "twenty billion, four million, two hundred twenty-six thousand, four hundred sixty-four".