56688684745 has 32 divisors (see below), whose sum is σ = 85127604480. Its totient is φ = 35206967040.

The previous prime is 56688684743. The next prime is 56688684841. The reversal of 56688684745 is 54748688665.

It is not a de Polignac number, because 56688684745 - 2¹ = 56688684743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56688684743) 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 31 ways as a sum of consecutive naturals, for example, 170122 + ... + 377251.

It is an arithmetic number, because the mean of its divisors is an integer number (2660237640).

Almost surely, 2^56688684745 is an apocalyptic number.

56688684745 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56688684745 is a deficient number, since it is larger than the sum of its proper divisors (28438919735).

56688684745 is a wasteful number, since it uses less digits than its factorization.

56688684745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547665.

The product of its digits is 309657600, while the sum is 67.

The spelling of 56688684745 in words is "fifty-six billion, six hundred eighty-eight million, six hundred eighty-four thousand, seven hundred forty-five".