16561362470371 has 4 divisors (see below), whose sum is σ = 16563279081544. Its totient is φ = 16559445859200.

The previous prime is 16561362470357. The next prime is 16561362470377. The reversal of 16561362470371 is 17307426316561.

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

It is a cyclic number.

It is not a de Polignac number, because 16561362470371 - 2⁷ = 16561362470243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16561362470377) 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, 958292625 + ... + 958309906.

It is an arithmetic number, because the mean of its divisors is an integer number (4140819770386).

Almost surely, 2^{16561362470371} is an apocalyptic number.

16561362470371 is a deficient number, since it is larger than the sum of its proper divisors (1916611173).

16561362470371 is an equidigital number, since it uses as much as digits as its factorization.

16561362470371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1916611172.

The product of its (nonzero) digits is 3810240, while the sum is 52.

The spelling of 16561362470371 in words is "sixteen trillion, five hundred sixty-one billion, three hundred sixty-two million, four hundred seventy thousand, three hundred seventy-one".