16565370641057 has 48 divisors (see below), whose sum is σ = 20923649904960. Its totient is φ = 13024302584832.

The previous prime is 16565370641041. The next prime is 16565370641081. The reversal of 16565370641057 is 75014607356561.

It is not a de Polignac number, because 16565370641057 - 2⁴ = 16565370641041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16565370640993 and 16565370641011.

It is not an unprimeable number, because it can be changed into a prime (16565370641087) 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 47 ways as a sum of consecutive naturals, for example, 15863294 + ... + 16875272.

It is an arithmetic number, because the mean of its divisors is an integer number (435909373020).

Almost surely, 2^{16565370641057} is an apocalyptic number.

16565370641057 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

16565370641057 is a deficient number, since it is larger than the sum of its proper divisors (4358279263903).

16565370641057 is a wasteful number, since it uses less digits than its factorization.

16565370641057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1012510 (or 1012503 counting only the distinct ones).

The product of its (nonzero) digits is 15876000, while the sum is 56.

The spelling of 16565370641057 in words is "sixteen trillion, five hundred sixty-five billion, three hundred seventy million, six hundred forty-one thousand, fifty-seven".