19912964603441 has 32 divisors (see below), whose sum is σ = 24554413298688. Its totient is φ = 15725651376960.

The previous prime is 19912964603423. The next prime is 19912964603489. The reversal of 19912964603441 is 14430646921991.

It is a happy number.

It is not a de Polignac number, because 19912964603441 - 2¹⁰ = 19912964602417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19912964603341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 735026306 + ... + 735053396.

It is an arithmetic number, because the mean of its divisors is an integer number (767325415584).

Almost surely, 2^{19912964603441} is an apocalyptic number.

It is an amenable number.

19912964603441 is a deficient number, since it is larger than the sum of its proper divisors (4641448695247).

19912964603441 is a wasteful number, since it uses less digits than its factorization.

19912964603441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42021.

The product of its (nonzero) digits is 10077696, while the sum is 59.

The spelling of 19912964603441 in words is "nineteen trillion, nine hundred twelve billion, nine hundred sixty-four million, six hundred three thousand, four hundred forty-one".