68403991652 has 12 divisors (see below), whose sum is σ = 119896699776. Its totient is φ = 34147791720.

The previous prime is 68403991631. The next prime is 68403991703. The reversal of 68403991652 is 25619930486.

68403991652 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 68403991594 and 68403991603.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13548188 + ... + 13553235.

It is an arithmetic number, because the mean of its divisors is an integer number (9991391648).

Almost surely, 2^68403991652 is an apocalyptic number.

It is an amenable number.

68403991652 is a deficient number, since it is larger than the sum of its proper divisors (51492708124).

68403991652 is a wasteful number, since it uses less digits than its factorization.

68403991652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27102058 (or 27102056 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 53.

The spelling of 68403991652 in words is "sixty-eight billion, four hundred three million, nine hundred ninety-one thousand, six hundred fifty-two".