68623680554 has 32 divisors (see below), whose sum is σ = 121020782400. Its totient is φ = 28771833600.

The previous prime is 68623680551. The next prime is 68623680557. The reversal of 68623680554 is 45508632686.

68623680554 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (68623680551) and next prime (68623680557).

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 68623680496 and 68623680505.

It is not an unprimeable number, because it can be changed into a prime (68623680551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 301097 + ... + 477395.

It is an arithmetic number, because the mean of its divisors is an integer number (3781899450).

Almost surely, 2^68623680554 is an apocalyptic number.

68623680554 is a deficient number, since it is larger than the sum of its proper divisors (52397101846).

68623680554 is a wasteful number, since it uses less digits than its factorization.

68623680554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177686.

The product of its (nonzero) digits is 8294400, while the sum is 53.

The spelling of 68623680554 in words is "sixty-eight billion, six hundred twenty-three million, six hundred eighty thousand, five hundred fifty-four".