16542651615655 has 32 divisors (see below), whose sum is σ = 22424938982208. Its totient is φ = 11705856497280.

The previous prime is 16542651615643. The next prime is 16542651615667. The reversal of 16542651615655 is 55651615624561.

It is an interprime number because it is at equal distance from previous prime (16542651615643) and next prime (16542651615667).

It is not a de Polignac number, because 16542651615655 - 2²¹ = 16542649518503 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16542651615655.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33344952 + ... + 33837421.

It is an arithmetic number, because the mean of its divisors is an integer number (700779343194).

Almost surely, 2^{16542651615655} is an apocalyptic number.

16542651615655 is a deficient number, since it is larger than the sum of its proper divisors (5882287366553).

16542651615655 is an equidigital number, since it uses as much as digits as its factorization.

16542651615655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67182448 (or 67182426 counting only the distinct ones).

The product of its digits is 32400000, while the sum is 58.

The spelling of 16542651615655 in words is "sixteen trillion, five hundred forty-two billion, six hundred fifty-one million, six hundred fifteen thousand, six hundred fifty-five".