66777160018 has 8 divisors (see below), whose sum is σ = 100233838080. Its totient is φ = 33365880660.

The previous prime is 66777160013. The next prime is 66777160027. The reversal of 66777160018 is 81006177766.

66777160018 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (66777160013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11345998 + ... + 11351881.

It is an arithmetic number, because the mean of its divisors is an integer number (12529229760).

Almost surely, 2^66777160018 is an apocalyptic number.

66777160018 is a deficient number, since it is larger than the sum of its proper divisors (33456678062).

66777160018 is a wasteful number, since it uses less digits than its factorization.

66777160018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22699352.

The product of its (nonzero) digits is 592704, while the sum is 49.

The spelling of 66777160018 in words is "sixty-six billion, seven hundred seventy-seven million, one hundred sixty thousand, eighteen".