16205124819 has 16 divisors (see below), whose sum is σ = 23283967392. Its totient is φ = 9965925888.

The previous prime is 16205124799. The next prime is 16205124851. The reversal of 16205124819 is 91842150261.

It is not a de Polignac number, because 16205124819 - 2⁸ = 16205124563 is a prime.

It is a super-2 number, since 2×16205124819² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (16205124119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73212 + ... + 194345.

It is an arithmetic number, because the mean of its divisors is an integer number (1455247962).

Almost surely, 2^16205124819 is an apocalyptic number.

16205124819 is a deficient number, since it is larger than the sum of its proper divisors (7078842573).

16205124819 is a wasteful number, since it uses less digits than its factorization.

16205124819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269126.

The product of its (nonzero) digits is 34560, while the sum is 39.

The spelling of 16205124819 in words is "sixteen billion, two hundred five million, one hundred twenty-four thousand, eight hundred nineteen".