56742697759 has 4 divisors (see below), whose sum is σ = 61901124840. Its totient is φ = 51584270680.

The previous prime is 56742697757. The next prime is 56742697769. The reversal of 56742697759 is 95779624765.

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 56742697759 - 2¹ = 56742697757 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56742697694 and 56742697703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56742697757) 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, 2579213524 + ... + 2579213545.

It is an arithmetic number, because the mean of its divisors is an integer number (15475281210).

Almost surely, 2^56742697759 is an apocalyptic number.

56742697759 is a deficient number, since it is larger than the sum of its proper divisors (5158427081).

56742697759 is a wasteful number, since it uses less digits than its factorization.

56742697759 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5158427080.

The product of its digits is 200037600, while the sum is 67.

The spelling of 56742697759 in words is "fifty-six billion, seven hundred forty-two million, six hundred ninety-seven thousand, seven hundred fifty-nine".