16875257861 has 64 divisors (see below), whose sum is σ = 21789941760. Its totient is φ = 12797928000.

The previous prime is 16875257857. The next prime is 16875257863.

16875257861 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 16875257861 - 2² = 16875257857 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16875257797 and 16875257806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16875257863) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 74340230 + ... + 74340456.

It is an arithmetic number, because the mean of its divisors is an integer number (340467840).

Almost surely, 2^16875257861 is an apocalyptic number.

16875257861 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16875257861 is a deficient number, since it is larger than the sum of its proper divisors (4914683899).

16875257861 is a wasteful number, since it uses less digits than its factorization.

16875257861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447 (or 425 counting only the distinct ones).

The product of its digits is 5644800, while the sum is 56.

The spelling of 16875257861 in words is "sixteen billion, eight hundred seventy-five million, two hundred fifty-seven thousand, eight hundred sixty-one".