66284179479 has 24 divisors (see below), whose sum is σ = 109912205312. Its totient is φ = 37706815440.

The previous prime is 66284179439. The next prime is 66284179501. The reversal of 66284179479 is 97497148266.

66284179479 is a `hidden beast` number, since 6 + 62 + 8 + 417 + 94 + 79 = 666.

It is not a de Polignac number, because 66284179479 - 2²¹ = 66282082327 is a prime.

It is a super-2 number, since 2×66284179479² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66284179439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2344987 + ... + 2373084.

Almost surely, 2^66284179479 is an apocalyptic number.

66284179479 is a deficient number, since it is larger than the sum of its proper divisors (43628025833).

66284179479 is a wasteful number, since it uses less digits than its factorization.

66284179479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4718307 (or 4718304 counting only the distinct ones).

The product of its digits is 36578304, while the sum is 63.

The spelling of 66284179479 in words is "sixty-six billion, two hundred eighty-four million, one hundred seventy-nine thousand, four hundred seventy-nine".