66859250755 has 32 divisors (see below), whose sum is σ = 88880613120. Its totient is φ = 47872513920.

The previous prime is 66859250743. The next prime is 66859250761. The reversal of 66859250755 is 55705295866.

66859250755 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 66859250755 - 2⁵ = 66859250723 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66859250755.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8615337 + ... + 8623093.

It is an arithmetic number, because the mean of its divisors is an integer number (2777519160).

Almost surely, 2^66859250755 is an apocalyptic number.

66859250755 is a deficient number, since it is larger than the sum of its proper divisors (22021362365).

66859250755 is a wasteful number, since it uses less digits than its factorization.

66859250755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10179.

The product of its (nonzero) digits is 22680000, while the sum is 58.

The spelling of 66859250755 in words is "sixty-six billion, eight hundred fifty-nine million, two hundred fifty thousand, seven hundred fifty-five".