16550277621311 has 4 divisors (see below), whose sum is σ = 18914602995792. Its totient is φ = 14185952246832.

The previous prime is 16550277621307. The next prime is 16550277621329. The reversal of 16550277621311 is 11312677205561.

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

It is a cyclic number.

It is not a de Polignac number, because 16550277621311 - 2² = 16550277621307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16550277621301) 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, 1182162687230 + ... + 1182162687243.

It is an arithmetic number, because the mean of its divisors is an integer number (4728650748948).

Almost surely, 2^{16550277621311} is an apocalyptic number.

16550277621311 is a deficient number, since it is larger than the sum of its proper divisors (2364325374481).

16550277621311 is an equidigital number, since it uses as much as digits as its factorization.

16550277621311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2364325374480.

The product of its (nonzero) digits is 529200, while the sum is 47.

The spelling of 16550277621311 in words is "sixteen trillion, five hundred fifty billion, two hundred seventy-seven million, six hundred twenty-one thousand, three hundred eleven".