16105541555499 has 12 divisors (see below), whose sum is σ = 23603713795368. Its totient is φ = 9760934275840.

The previous prime is 16105541555483. The next prime is 16105541555501. The reversal of 16105541555499 is 99455514550161.

It is not a de Polignac number, because 16105541555499 - 2⁴ = 16105541555483 is a prime.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (16105541553499) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22183941174 + ... + 22183941899.

It is an arithmetic number, because the mean of its divisors is an integer number (1966976149614).

Almost surely, 2^{16105541555499} is an apocalyptic number.

16105541555499 is a deficient number, since it is larger than the sum of its proper divisors (7498172239869).

16105541555499 is a wasteful number, since it uses less digits than its factorization.

16105541555499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44367883098 (or 44367883087 counting only the distinct ones).

The product of its (nonzero) digits is 24300000, while the sum is 60.

The spelling of 16105541555499 in words is "sixteen trillion, one hundred five billion, five hundred forty-one million, five hundred fifty-five thousand, four hundred ninety-nine".