919905336454368 has 96 divisors (see below), whose sum is σ = 2639003771698560. Its totient is φ = 278258727349760.

The previous prime is 919905336454339. The next prime is 919905336454369. The reversal of 919905336454368 is 863454633509919.

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 919905336454368.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (919905336454369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 781388898 + ... + 782565281.

It is an arithmetic number, because the mean of its divisors is an integer number (27489622621860).

Almost surely, 2^{919905336454368} is an apocalyptic number.

It is an amenable number.

919905336454368 is an abundant number, since it is smaller than the sum of its proper divisors (1719098435244192).

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

919905336454368 is a wasteful number, since it uses less digits than its factorization.

919905336454368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1563954760 (or 1563954752 counting only the distinct ones).

The product of its (nonzero) digits is 2267481600, while the sum is 75.

The spelling of 919905336454368 in words is "nine hundred nineteen trillion, nine hundred five billion, three hundred thirty-six million, four hundred fifty-four thousand, three hundred sixty-eight".