16640175270557 has 4 divisors (see below), whose sum is σ = 16642662226176. Its totient is φ = 16637688314940.

The previous prime is 16640175270479. The next prime is 16640175270577. The reversal of 16640175270557 is 75507257104661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16640175270557 - 2³² = 16635880303261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16640175270577) 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, 1243467773 + ... + 1243481154.

It is an arithmetic number, because the mean of its divisors is an integer number (4160665556544).

Almost surely, 2^{16640175270557} is an apocalyptic number.

It is an amenable number.

16640175270557 is a deficient number, since it is larger than the sum of its proper divisors (2486955619).

16640175270557 is an equidigital number, since it uses as much as digits as its factorization.

16640175270557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2486955618.

The product of its (nonzero) digits is 12348000, while the sum is 56.

The spelling of 16640175270557 in words is "sixteen trillion, six hundred forty billion, one hundred seventy-five million, two hundred seventy thousand, five hundred fifty-seven".