66171152 has 20 divisors (see below), whose sum is σ = 131189520. Its totient is φ = 32315808.

The previous prime is 66171151. The next prime is 66171173. The reversal of 66171152 is 25117166.

It is not an unprimeable number, because it can be changed into a prime (66171151) 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, 47402 + ... + 48777.

It is an arithmetic number, because the mean of its divisors is an integer number (6559476).

Almost surely, 2^66171152 is an apocalyptic number.

It is an amenable number.

66171152 is a deficient number, since it is larger than the sum of its proper divisors (65018368).

66171152 is a wasteful number, since it uses less digits than its factorization.

66171152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96230 (or 96224 counting only the distinct ones).

The product of its digits is 2520, while the sum is 29.

The square root of 66171152 is about 8134.5652618932. The cubic root of 66171152 is about 404.4730269575.

The spelling of 66171152 in words is "sixty-six million, one hundred seventy-one thousand, one hundred fifty-two".