66011159 has 4 divisors (see below), whose sum is σ = 66262416. Its totient is φ = 65759904.

The previous prime is 66011137. The next prime is 66011161. The reversal of 66011159 is 95111066.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66011159 is a prime.

It is a super-2 number, since 2×66011159² = 8714946225046562, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66010159) 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, 125234 + ... + 125759.

It is an arithmetic number, because the mean of its divisors is an integer number (16565604).

Almost surely, 2^66011159 is an apocalyptic number.

66011159 is a deficient number, since it is larger than the sum of its proper divisors (251257).

66011159 is a wasteful number, since it uses less digits than its factorization.

66011159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251256.

The product of its (nonzero) digits is 1620, while the sum is 29.

The square root of 66011159 is about 8124.7251645825. The cubic root of 66011159 is about 404.1467766360.

The spelling of 66011159 in words is "sixty-six million, eleven thousand, one hundred fifty-nine".