68720752618 has 16 divisors (see below), whose sum is σ = 117857384064. Its totient is φ = 29439156240.

The previous prime is 68720752579. The next prime is 68720752637. The reversal of 68720752618 is 81625702786.

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, 1015630 + ... + 1081177.

It is an arithmetic number, because the mean of its divisors is an integer number (7366086504).

Almost surely, 2^68720752618 is an apocalyptic number.

68720752618 is a deficient number, since it is larger than the sum of its proper divisors (49136631446).

68720752618 is a wasteful number, since it uses less digits than its factorization.

68720752618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2099157.

The product of its (nonzero) digits is 2257920, while the sum is 52.

The spelling of 68720752618 in words is "sixty-eight billion, seven hundred twenty million, seven hundred fifty-two thousand, six hundred eighteen".