16202743437561 has 8 divisors (see below), whose sum is σ = 21607580883744. Its totient is φ = 10799867474880.

The previous prime is 16202743437541. The next prime is 16202743437607. The reversal of 16202743437561 is 16573434720261.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16202743437561 - 2²⁶ = 16202676328697 is a prime.

It is a super-2 number, since 2×16202743437561² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16202743437541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 490351600 + ... + 490384641.

It is an arithmetic number, because the mean of its divisors is an integer number (2700947610468).

Almost surely, 2^{16202743437561} is an apocalyptic number.

It is an amenable number.

16202743437561 is a deficient number, since it is larger than the sum of its proper divisors (5404837446183).

16202743437561 is an equidigital number, since it uses as much as digits as its factorization.

16202743437561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980741751.

The product of its (nonzero) digits is 5080320, while the sum is 51.

The spelling of 16202743437561 in words is "sixteen trillion, two hundred two billion, seven hundred forty-three million, four hundred thirty-seven thousand, five hundred sixty-one".