68261525918 has 16 divisors (see below), whose sum is σ = 102587832240. Its totient is φ = 34065614016.

The previous prime is 68261525837. The next prime is 68261525933. The reversal of 68261525918 is 81952516286.

It is a self number, because there is not a number n which added to its sum of digits gives 68261525918.

It is a congruent number.

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, 6969821 + ... + 6979607.

It is an arithmetic number, because the mean of its divisors is an integer number (6411739515).

Almost surely, 2^68261525918 is an apocalyptic number.

68261525918 is a deficient number, since it is larger than the sum of its proper divisors (34326306322).

68261525918 is a wasteful number, since it uses less digits than its factorization.

68261525918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16091.

The product of its digits is 2073600, while the sum is 53.

The spelling of 68261525918 in words is "sixty-eight billion, two hundred sixty-one million, five hundred twenty-five thousand, nine hundred eighteen".