66167056765118 has 4 divisors (see below), whose sum is σ = 99250585147680. Its totient is φ = 33083528382558.

The previous prime is 66167056765081. The next prime is 66167056765127. The reversal of 66167056765118 is 81156765076166.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16541764191278 + ... + 16541764191281.

It is an arithmetic number, because the mean of its divisors is an integer number (24812646286920).

Almost surely, 2^{66167056765118} is an apocalyptic number.

66167056765118 is a deficient number, since it is larger than the sum of its proper divisors (33083528382562).

66167056765118 is a wasteful number, since it uses less digits than its factorization.

66167056765118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33083528382561.

The product of its (nonzero) digits is 76204800, while the sum is 65.

The spelling of 66167056765118 in words is "sixty-six trillion, one hundred sixty-seven billion, fifty-six million, seven hundred sixty-five thousand, one hundred eighteen".