16123615881839 has 4 divisors (see below), whose sum is σ = 16128078552456. Its totient is φ = 16119153211224.

The previous prime is 16123615881761. The next prime is 16123615881847. The reversal of 16123615881839 is 93818851632161.

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 16123615881839 - 2²⁸ = 16123347446383 is a prime.

It is a super-2 number, since 2×16123615881839² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16123615881869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2231329889 + ... + 2231337114.

It is an arithmetic number, because the mean of its divisors is an integer number (4032019638114).

Almost surely, 2^{16123615881839} is an apocalyptic number.

16123615881839 is a deficient number, since it is larger than the sum of its proper divisors (4462670617).

16123615881839 is an equidigital number, since it uses as much as digits as its factorization.

16123615881839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4462670616.

The product of its digits is 14929920, while the sum is 62.

The spelling of 16123615881839 in words is "sixteen trillion, one hundred twenty-three billion, six hundred fifteen million, eight hundred eighty-one thousand, eight hundred thirty-nine".