76666020205 has 16 divisors (see below), whose sum is σ = 96848210880. Its totient is φ = 58100620032.

The previous prime is 76666020203. The next prime is 76666020209. The reversal of 76666020205 is 50202066667.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 76666020205 - 2¹ = 76666020203 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76666020203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2249502 + ... + 2283328.

It is an arithmetic number, because the mean of its divisors is an integer number (6053013180).

Almost surely, 2^76666020205 is an apocalyptic number.

It is an amenable number.

76666020205 is a deficient number, since it is larger than the sum of its proper divisors (20182190675).

76666020205 is a wasteful number, since it uses less digits than its factorization.

76666020205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57708.

The product of its (nonzero) digits is 181440, while the sum is 40.

The spelling of 76666020205 in words is "seventy-six billion, six hundred sixty-six million, twenty thousand, two hundred five".