4491963263844 has 96 divisors (see below), whose sum is σ = 13311137414400. Its totient is φ = 1283262186240.

The previous prime is 4491963263789. The next prime is 4491963263867. The reversal of 4491963263844 is 4483623691944.

4491963263844 is a `hidden beast` number, since 4 + 49 + 196 + 3 + 26 + 384 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5940034 + ... + 6653414.

It is an arithmetic number, because the mean of its divisors is an integer number (138657681400).

Almost surely, 2^{4491963263844} is an apocalyptic number.

It is an amenable number.

4491963263844 is an abundant number, since it is smaller than the sum of its proper divisors (8819174150556).

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

4491963263844 is a wasteful number, since it uses less digits than its factorization.

4491963263844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721730 (or 721722 counting only the distinct ones).

The product of its digits is 107495424, while the sum is 63.

The spelling of 4491963263844 in words is "four trillion, four hundred ninety-one billion, nine hundred sixty-three million, two hundred sixty-three thousand, eight hundred forty-four".