16218760107457 has 4 divisors (see below), whose sum is σ = 16484641420756. Its totient is φ = 15952878794160.

The previous prime is 16218760107443. The next prime is 16218760107461. The reversal of 16218760107457 is 75470106781261.

It is a happy number.

16218760107457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6274979910081 + 9943780197376 = 2504991^2 + 3153376^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16218760107457 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16218760107398 and 16218760107407.

It is not an unprimeable number, because it can be changed into a prime (16218760101457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132940656558 + ... + 132940656679.

It is an arithmetic number, because the mean of its divisors is an integer number (4121160355189).

Almost surely, 2^{16218760107457} is an apocalyptic number.

It is an amenable number.

16218760107457 is a deficient number, since it is larger than the sum of its proper divisors (265881313299).

16218760107457 is an equidigital number, since it uses as much as digits as its factorization.

16218760107457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265881313298.

The product of its (nonzero) digits is 3951360, while the sum is 55.

The spelling of 16218760107457 in words is "sixteen trillion, two hundred eighteen billion, seven hundred sixty million, one hundred seven thousand, four hundred fifty-seven".