56129470209 has 16 divisors (see below), whose sum is σ = 84924023040. Its totient is φ = 36623483280.

The previous prime is 56129470121. The next prime is 56129470223. The reversal of 56129470209 is 90207492165.

56129470209 is a `hidden beast` number, since 5 + 612 + 9 + 4 + 7 + 0 + 20 + 9 = 666.

It is not a de Polignac number, because 56129470209 - 2³² = 51834502913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56129070209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22114362 + ... + 22116899.

It is an arithmetic number, because the mean of its divisors is an integer number (5307751440).

Almost surely, 2^56129470209 is an apocalyptic number.

It is an amenable number.

56129470209 is a deficient number, since it is larger than the sum of its proper divisors (28794552831).

56129470209 is a wasteful number, since it uses less digits than its factorization.

56129470209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44231317 (or 44231311 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The spelling of 56129470209 in words is "fifty-six billion, one hundred twenty-nine million, four hundred seventy thousand, two hundred nine".