668500381348 has 24 divisors (see below), whose sum is σ = 1238716910592. Its totient is φ = 314582058624.

The previous prime is 668500381313. The next prime is 668500381363. The reversal of 668500381348 is 843183005866.

It is a junction number, because it is equal to n+sod(n) for n = 668500381295 and 668500381304.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6312765 + ... + 6417787.

It is an arithmetic number, because the mean of its divisors is an integer number (51613204608).

Almost surely, 2^668500381348 is an apocalyptic number.

668500381348 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

668500381348 is a deficient number, since it is larger than the sum of its proper divisors (570216529244).

668500381348 is a wasteful number, since it uses less digits than its factorization.

668500381348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198651 (or 198649 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 52.

The spelling of 668500381348 in words is "six hundred sixty-eight billion, five hundred million, three hundred eighty-one thousand, three hundred forty-eight".