66135156652259 has 8 divisors (see below), whose sum is σ = 66383085210288. Its totient is φ = 65887294091040.

The previous prime is 66135156652231. The next prime is 66135156652283. The reversal of 66135156652259 is 95225665153166.

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

It is a cyclic number.

It is not a de Polignac number, because 66135156652259 - 2²⁰ = 66135155603683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66135156652219) 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, 14490797 + ... + 18500094.

It is an arithmetic number, because the mean of its divisors is an integer number (8297885651286).

Almost surely, 2^{66135156652259} is an apocalyptic number.

66135156652259 is a deficient number, since it is larger than the sum of its proper divisors (247928558029).

66135156652259 is a wasteful number, since it uses less digits than its factorization.

66135156652259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32998405.

The product of its digits is 87480000, while the sum is 62.

The spelling of 66135156652259 in words is "sixty-six trillion, one hundred thirty-five billion, one hundred fifty-six million, six hundred fifty-two thousand, two hundred fifty-nine".