56819936065 has 4 divisors (see below), whose sum is σ = 68183923284. Its totient is φ = 45455948848.

The previous prime is 56819936051. The next prime is 56819936081. The reversal of 56819936065 is 56063991865.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5898854416 + 50921081649 = 76804^2 + 225657^2 .

It is a cyclic number.

It is not a de Polignac number, because 56819936065 - 2¹³ = 56819927873 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5681993602 + ... + 5681993611.

It is an arithmetic number, because the mean of its divisors is an integer number (17045980821).

Almost surely, 2^56819936065 is an apocalyptic number.

It is an amenable number.

56819936065 is a deficient number, since it is larger than the sum of its proper divisors (11363987219).

56819936065 is a wasteful number, since it uses less digits than its factorization.

56819936065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11363987218.

The product of its (nonzero) digits is 10497600, while the sum is 58.

The spelling of 56819936065 in words is "fifty-six billion, eight hundred nineteen million, nine hundred thirty-six thousand, sixty-five".