66166151 has 8 divisors (see below), whose sum is σ = 70791600. Its totient is φ = 61655040.

The previous prime is 66166141. The next prime is 66166153. The reversal of 66166151 is 15166166.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66166151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66166153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27386 + ... + 29703.

It is an arithmetic number, because the mean of its divisors is an integer number (8848950).

Almost surely, 2^66166151 is an apocalyptic number.

66166151 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

66166151 is a deficient number, since it is larger than the sum of its proper divisors (4625449).

66166151 is a wasteful number, since it uses less digits than its factorization.

66166151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57169.

The product of its digits is 6480, while the sum is 32.

The square root of 66166151 is about 8134.2578641201. The cubic root of 66166151 is about 404.4628371165.

The spelling of 66166151 in words is "sixty-six million, one hundred sixty-six thousand, one hundred fifty-one".