16160611561 has 4 divisors (see below), whose sum is σ = 16160866432. Its totient is φ = 16160356692.

The previous prime is 16160611541. The next prime is 16160611567. The reversal of 16160611561 is 16511606161.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 16160611561 - 2¹⁷ = 16160480489 is a prime.

It is a super-2 number, since 2×16160611561² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16160611567) 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, 50380 + ... + 186706.

It is an arithmetic number, because the mean of its divisors is an integer number (4040216608).

Almost surely, 2^16160611561 is an apocalyptic number.

It is an amenable number.

16160611561 is a deficient number, since it is larger than the sum of its proper divisors (254871).

16160611561 is a wasteful number, since it uses less digits than its factorization.

16160611561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254870.

The product of its (nonzero) digits is 6480, while the sum is 34.

The spelling of 16160611561 in words is "sixteen billion, one hundred sixty million, six hundred eleven thousand, five hundred sixty-one".