19964605441 has 8 divisors (see below), whose sum is σ = 21783254400. Its totient is φ = 18146570640.

The previous prime is 19964605391. The next prime is 19964605483. The reversal of 19964605441 is 14450646991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 19964605441 - 2¹³ = 19964597249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19964605541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84201 + ... + 216838.

It is an arithmetic number, because the mean of its divisors is an integer number (2722906800).

Almost surely, 2^19964605441 is an apocalyptic number.

19964605441 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

19964605441 is a deficient number, since it is larger than the sum of its proper divisors (1818648959).

19964605441 is a wasteful number, since it uses less digits than its factorization.

19964605441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307079.

The product of its (nonzero) digits is 933120, while the sum is 49.

The spelling of 19964605441 in words is "nineteen billion, nine hundred sixty-four million, six hundred five thousand, four hundred forty-one".