16555266740155 has 64 divisors (see below), whose sum is σ = 23479518480768. Its totient is φ = 11047526645760.

The previous prime is 16555266740149. The next prime is 16555266740171. The reversal of 16555266740155 is 55104766255561.

It is not a de Polignac number, because 16555266740155 - 2⁵ = 16555266740123 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. Since it is squarefree, it is also a hoax number.

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 16555266740155.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 79905757 + ... + 80112673.

It is an arithmetic number, because the mean of its divisors is an integer number (366867476262).

Almost surely, 2^{16555266740155} is an apocalyptic number.

16555266740155 is a deficient number, since it is larger than the sum of its proper divisors (6924251740613).

16555266740155 is a wasteful number, since it uses less digits than its factorization.

16555266740155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207616.

The product of its (nonzero) digits is 37800000, while the sum is 58.

The spelling of 16555266740155 in words is "sixteen trillion, five hundred fifty-five billion, two hundred sixty-six million, seven hundred forty thousand, one hundred fifty-five".