663919919366 has 8 divisors (see below), whose sum is σ = 1086414413544. Its totient is φ = 301781781520.

The previous prime is 663919919363. The next prime is 663919919417.

663919919366 is nontrivially palindromic in base 10.

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

It is a junction number, because it is equal to n+sod(n) for n = 663919919296 and 663919919305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663919919363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15089089055 + ... + 15089089098.

It is an arithmetic number, because the mean of its divisors is an integer number (135801801693).

Almost surely, 2^663919919366 is an apocalyptic number.

663919919366 is a deficient number, since it is larger than the sum of its proper divisors (422494494178).

663919919366 is a wasteful number, since it uses less digits than its factorization.

663919919366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30178178166.

The product of its digits is 76527504, while the sum is 68.

The spelling of 663919919366 in words is "six hundred sixty-three billion, nine hundred nineteen million, nine hundred nineteen thousand, three hundred sixty-six".