16545126455623 has 4 divisors (see below), whose sum is σ = 17078840212288. Its totient is φ = 16011412698960.

The previous prime is 16545126455573. The next prime is 16545126455639. The reversal of 16545126455623 is 32655462154561.

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 16545126455623 - 2²⁹ = 16544589584711 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 (16545126455723) 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, 266856878286 + ... + 266856878347.

It is an arithmetic number, because the mean of its divisors is an integer number (4269710053072).

Almost surely, 2^{16545126455623} is an apocalyptic number.

16545126455623 is a deficient number, since it is larger than the sum of its proper divisors (533713756665).

16545126455623 is an equidigital number, since it uses as much as digits as its factorization.

16545126455623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533713756664.

The product of its digits is 25920000, while the sum is 55.

The spelling of 16545126455623 in words is "sixteen trillion, five hundred forty-five billion, one hundred twenty-six million, four hundred fifty-five thousand, six hundred twenty-three".