66434415047 has 32 divisors (see below), whose sum is σ = 91609480704. Its totient is φ = 46493481600.

The previous prime is 66434415043. The next prime is 66434415049. The reversal of 66434415047 is 74051443466.

It is a cyclic number.

It is not a de Polignac number, because 66434415047 - 2² = 66434415043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66434414989 and 66434415007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66434415043) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 859829 + ... + 933902.

It is an arithmetic number, because the mean of its divisors is an integer number (2862796272).

Almost surely, 2^66434415047 is an apocalyptic number.

66434415047 is a deficient number, since it is larger than the sum of its proper divisors (25175065657).

66434415047 is a wasteful number, since it uses less digits than its factorization.

66434415047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1793799.

The product of its (nonzero) digits is 967680, while the sum is 44.

The spelling of 66434415047 in words is "sixty-six billion, four hundred thirty-four million, four hundred fifteen thousand, forty-seven".