68403991603 has 8 divisors (see below), whose sum is σ = 69704966016. Its totient is φ = 67103400000.

The previous prime is 68403991567. The next prime is 68403991631. The reversal of 68403991603 is 30619930486.

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

It is a cyclic number.

It is not a de Polignac number, because 68403991603 - 2⁹ = 68403991091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68403991303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 278878 + ... + 463228.

It is an arithmetic number, because the mean of its divisors is an integer number (8713120752).

Almost surely, 2^68403991603 is an apocalyptic number.

68403991603 is a deficient number, since it is larger than the sum of its proper divisors (1300974413).

68403991603 is a wasteful number, since it uses less digits than its factorization.

68403991603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191405.

The product of its (nonzero) digits is 839808, while the sum is 49.

The spelling of 68403991603 in words is "sixty-eight billion, four hundred three million, nine hundred ninety-one thousand, six hundred three".