16553623426275 has 144 divisors (see below), whose sum is σ = 31423435021440. Its totient is φ = 7664186649600.

The previous prime is 16553623426189. The next prime is 16553623426289. The reversal of 16553623426275 is 57262432635561.

It is not a de Polignac number, because 16553623426275 - 2⁷ = 16553623426147 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 32742160 + ... + 33243890.

It is an arithmetic number, because the mean of its divisors is an integer number (218218298760).

Almost surely, 2^{16553623426275} is an apocalyptic number.

16553623426275 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16553623426275 is a deficient number, since it is larger than the sum of its proper divisors (14869811595165).

16553623426275 is a wasteful number, since it uses less digits than its factorization.

16553623426275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501926 (or 501908 counting only the distinct ones).

The product of its digits is 54432000, while the sum is 57.

The spelling of 16553623426275 in words is "sixteen trillion, five hundred fifty-three billion, six hundred twenty-three million, four hundred twenty-six thousand, two hundred seventy-five".