56567656729 has 4 divisors (see below), whose sum is σ = 59544901840. Its totient is φ = 53590411620.

The previous prime is 56567656727. The next prime is 56567656741. The reversal of 56567656729 is 92765676565.

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 not a de Polignac number, because 56567656729 - 2¹ = 56567656727 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56567656727) 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 3 ways as a sum of consecutive naturals, for example, 1488622527 + ... + 1488622564.

It is an arithmetic number, because the mean of its divisors is an integer number (14886225460).

Almost surely, 2^56567656729 is an apocalyptic number.

It is an amenable number.

56567656729 is a deficient number, since it is larger than the sum of its proper divisors (2977245111).

56567656729 is a wasteful number, since it uses less digits than its factorization.

56567656729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2977245110.

The product of its digits is 142884000, while the sum is 64.

The spelling of 56567656729 in words is "fifty-six billion, five hundred sixty-seven million, six hundred fifty-six thousand, seven hundred twenty-nine".