16242727871761 has 4 divisors (see below), whose sum is σ = 16242827927524. Its totient is φ = 16242627816000.

The previous prime is 16242727871749. The next prime is 16242727871767. The reversal of 16242727871761 is 16717872724261.

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 15416185059025 + 826542812736 = 3926345^2 + 909144^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16242727871761 is a prime.

It is a super-2 number, since 2×16242727871761² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16242727871761.

It is not an unprimeable number, because it can be changed into a prime (16242727871767) 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, 49783980 + ... + 50109181.

It is an arithmetic number, because the mean of its divisors is an integer number (4060706981881).

Almost surely, 2^{16242727871761} is an apocalyptic number.

It is an amenable number.

16242727871761 is a deficient number, since it is larger than the sum of its proper divisors (100055763).

16242727871761 is an equidigital number, since it uses as much as digits as its factorization.

16242727871761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100055762.

The product of its digits is 22127616, while the sum is 61.

The spelling of 16242727871761 in words is "sixteen trillion, two hundred forty-two billion, seven hundred twenty-seven million, eight hundred seventy-one thousand, seven hundred sixty-one".