16616151161 has 4 divisors (see below), whose sum is σ = 16616833152. Its totient is φ = 16615469172.

The previous prime is 16616151143. The next prime is 16616151173. The reversal of 16616151161 is 16115161661.

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 an emirpimes, since its reverse is a distinct semiprime: 16115161661 = 87037 ⋅185153.

It is a cyclic number.

It is not a de Polignac number, because 16616151161 - 2²² = 16611956857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16616151131) 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, 303041 + ... + 353646.

It is an arithmetic number, because the mean of its divisors is an integer number (4154208288).

Almost surely, 2^16616151161 is an apocalyptic number.

It is an amenable number.

16616151161 is a deficient number, since it is larger than the sum of its proper divisors (681991).

16616151161 is an equidigital number, since it uses as much as digits as its factorization.

16616151161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681990.

The product of its digits is 6480, while the sum is 35.

The spelling of 16616151161 in words is "sixteen billion, six hundred sixteen million, one hundred fifty-one thousand, one hundred sixty-one".