16557576755 has 4 divisors (see below), whose sum is σ = 19869092112. Its totient is φ = 13246061400.

The previous prime is 16557576731. The next prime is 16557576769. The reversal of 16557576755 is 55767575561.

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

It is not a de Polignac number, because 16557576755 - 2¹² = 16557572659 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16557576694 and 16557576703.

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, 1655757671 + ... + 1655757680.

It is an arithmetic number, because the mean of its divisors is an integer number (4967273028).

Almost surely, 2^16557576755 is an apocalyptic number.

16557576755 is a deficient number, since it is larger than the sum of its proper divisors (3311515357).

16557576755 is an equidigital number, since it uses as much as digits as its factorization.

16557576755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3311515356.

The product of its digits is 38587500, while the sum is 59.

The spelling of 16557576755 in words is "sixteen billion, five hundred fifty-seven million, five hundred seventy-six thousand, seven hundred fifty-five".