68707525666 has 16 divisors (see below), whose sum is σ = 111201318144. Its totient is φ = 31650526224.

The previous prime is 68707525651. The next prime is 68707525673. The reversal of 68707525666 is 66652570786.

It is a self number, because there is not a number n which added to its sum of digits gives 68707525666.

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, 2512786 + ... + 2539981.

It is an arithmetic number, because the mean of its divisors is an integer number (6950082384).

Almost surely, 2^68707525666 is an apocalyptic number.

68707525666 is a deficient number, since it is larger than the sum of its proper divisors (42493792478).

68707525666 is a wasteful number, since it uses less digits than its factorization.

68707525666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5053305.

The product of its (nonzero) digits is 25401600, while the sum is 58.

The spelling of 68707525666 in words is "sixty-eight billion, seven hundred seven million, five hundred twenty-five thousand, six hundred sixty-six".