76670434447 has 4 divisors (see below), whose sum is σ = 76817032360. Its totient is φ = 76523836536.

The previous prime is 76670434397. The next prime is 76670434487. The reversal of 76670434447 is 74443407667.

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

It is a cyclic number.

It is not a de Polignac number, because 76670434447 - 2⁷ = 76670434319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 76670434394 and 76670434403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76670434487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73298172 + ... + 73299217.

It is an arithmetic number, because the mean of its divisors is an integer number (19204258090).

Almost surely, 2^76670434447 is an apocalyptic number.

76670434447 is a deficient number, since it is larger than the sum of its proper divisors (146597913).

76670434447 is a wasteful number, since it uses less digits than its factorization.

76670434447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146597912.

The product of its (nonzero) digits is 9483264, while the sum is 52.

The spelling of 76670434447 in words is "seventy-six billion, six hundred seventy million, four hundred thirty-four thousand, four hundred forty-seven".