66241013569 has 4 divisors (see below), whose sum is σ = 66287047680. Its totient is φ = 66194979460.

The previous prime is 66241013567. The next prime is 66241013593. The reversal of 66241013569 is 96531014266.

66241013569 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 66241013569 - 2¹ = 66241013567 is a prime.

It is a super-2 number, since 2×66241013569² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66241013563) 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, 23014897 + ... + 23017774.

It is an arithmetic number, because the mean of its divisors is an integer number (16571761920).

Almost surely, 2^66241013569 is an apocalyptic number.

It is an amenable number.

66241013569 is a deficient number, since it is larger than the sum of its proper divisors (46034111).

66241013569 is a wasteful number, since it uses less digits than its factorization.

66241013569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46034110.

The product of its (nonzero) digits is 233280, while the sum is 43.

The spelling of 66241013569 in words is "sixty-six billion, two hundred forty-one million, thirteen thousand, five hundred sixty-nine".