663926629366 has 64 divisors (see below), whose sum is σ = 1338525619200. Its totient is φ = 238527192960.

The previous prime is 663926629363. The next prime is 663926629381.

It is a happy number.

663926629366 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 663926629298 and 663926629307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663926629363) 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, 1764460 + ... + 2107408.

It is an arithmetic number, because the mean of its divisors is an integer number (20914462800).

Almost surely, 2^663926629366 is an apocalyptic number.

663926629366 is an abundant number, since it is smaller than the sum of its proper divisors (674598989834).

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

663926629366 is a wasteful number, since it uses less digits than its factorization.

663926629366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343949.

The product of its digits is 136048896, while the sum is 64.

The spelling of 663926629366 in words is "six hundred sixty-three billion, nine hundred twenty-six million, six hundred twenty-nine thousand, three hundred sixty-six".