16839455493861 has 384 divisors, whose sum is σ = 34096056164352. Its totient is φ = 7727166720000.

The previous prime is 16839455493859. The next prime is 16839455493863.

It is a happy number.

16839455493861 is a `hidden beast` number, since 1 + 6 + 8 + 3 + 9 + 4 + 55 + 493 + 86 + 1 = 666.

16839455493861 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (16839455493859) and next prime (16839455493863).

It is not a de Polignac number, because 16839455493861 - 2¹ = 16839455493859 is a prime.

It is a super-2 number, since 2×16839455493861² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16839455493861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16839455493863) by changing a digit.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 16022316786 + ... + 16022317836.

It is an arithmetic number, because the mean of its divisors is an integer number (88791812928).

Almost surely, 2^{16839455493861} is an apocalyptic number.

16839455493861 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16839455493861 is an abundant number, since it is smaller than the sum of its proper divisors (17256600670491).

16839455493861 is a wasteful number, since it uses less digits than its factorization.

16839455493861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1873 (or 1870 counting only the distinct ones).

The product of its digits is 671846400, while the sum is 72.

The spelling of 16839455493861 in words is "sixteen trillion, eight hundred thirty-nine billion, four hundred fifty-five million, four hundred ninety-three thousand, eight hundred sixty-one".