20444896464 has 40 divisors (see below), whose sum is σ = 52853908800. Its totient is φ = 6810071808.

The previous prime is 20444896463. The next prime is 20444896469. The reversal of 20444896464 is 46469844402.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20444896463) 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, 85077 + ... + 219380.

It is an arithmetic number, because the mean of its divisors is an integer number (1321347720).

Almost surely, 2^20444896464 is an apocalyptic number.

20444896464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20444896464 is an abundant number, since it is smaller than the sum of its proper divisors (32409012336).

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

20444896464 is a wasteful number, since it uses less digits than its factorization.

20444896464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305867 (or 305861 counting only the distinct ones).

The product of its (nonzero) digits is 5308416, while the sum is 51.

The spelling of 20444896464 in words is "twenty billion, four hundred forty-four million, eight hundred ninety-six thousand, four hundred sixty-four".