56982510689 has 4 divisors (see below), whose sum is σ = 61365780756. Its totient is φ = 52599240624.

The previous prime is 56982510667. The next prime is 56982510691. The reversal of 56982510689 is 98601528965.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98601528965 = 5 ⋅19720305793.

It can be written as a sum of positive squares in 2 ways, for example, as 28458003025 + 28524507664 = 168695^2 + 168892^2 .

It is a cyclic number.

It is not a de Polignac number, because 56982510689 - 2¹² = 56982506593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56982510289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2191635014 + ... + 2191635039.

It is an arithmetic number, because the mean of its divisors is an integer number (15341445189).

Almost surely, 2^56982510689 is an apocalyptic number.

It is an amenable number.

56982510689 is a deficient number, since it is larger than the sum of its proper divisors (4383270067).

56982510689 is a wasteful number, since it uses less digits than its factorization.

56982510689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4383270066.

The product of its (nonzero) digits is 9331200, while the sum is 59.

The spelling of 56982510689 in words is "fifty-six billion, nine hundred eighty-two million, five hundred ten thousand, six hundred eighty-nine".