66160556116 has 6 divisors (see below), whose sum is σ = 115780973210. Its totient is φ = 33080278056.

The previous prime is 66160556113. The next prime is 66160556131. The reversal of 66160556116 is 61165506166.

It can be written as a sum of positive squares in only one way, i.e., 45303419716 + 20857136400 = 212846^2 + 144420^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66160556113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8270069511 + ... + 8270069518.

Almost surely, 2^66160556116 is an apocalyptic number.

It is an amenable number.

66160556116 is a deficient number, since it is larger than the sum of its proper divisors (49620417094).

66160556116 is a wasteful number, since it uses less digits than its factorization.

66160556116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16540139033 (or 16540139031 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 43.

The spelling of 66160556116 in words is "sixty-six billion, one hundred sixty million, five hundred fifty-six thousand, one hundred sixteen".