56689344398665 has 16 divisors (see below), whose sum is σ = 74217490603776. Its totient is φ = 41225288992000.

The previous prime is 56689344398581. The next prime is 56689344398677.

56689344398665 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 56689344398665 - 2⁹ = 56689344398153 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40875697 + ... + 42239806.

It is an arithmetic number, because the mean of its divisors is an integer number (4638593162736).

Almost surely, 2^{56689344398665} is an apocalyptic number.

56689344398665 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56689344398665 is a deficient number, since it is larger than the sum of its proper divisors (17528146205111).

56689344398665 is a wasteful number, since it uses less digits than its factorization.

56689344398665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83127920.

The product of its digits is 24186470400, while the sum is 82.

The spelling of 56689344398665 in words is "fifty-six trillion, six hundred eighty-nine billion, three hundred forty-four million, three hundred ninety-eight thousand, six hundred sixty-five".