616546045023161 has 4 divisors (see below), whose sum is σ = 672595685479824. Its totient is φ = 560496404566500.

The previous prime is 616546045023157. The next prime is 616546045023221. The reversal of 616546045023161 is 161320540645616.

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.

It is a cyclic number.

It is not a de Polignac number, because 616546045023161 - 2² = 616546045023157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (616546045023661) 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, 28024820228315 + ... + 28024820228336.

It is an arithmetic number, because the mean of its divisors is an integer number (168148921369956).

Almost surely, 2^{616546045023161} is an apocalyptic number.

It is an amenable number.

616546045023161 is a deficient number, since it is larger than the sum of its proper divisors (56049640456663).

616546045023161 is a wasteful number, since it uses less digits than its factorization.

616546045023161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56049640456662.

The product of its (nonzero) digits is 3110400, while the sum is 50.

Adding to 616546045023161 its reverse (161320540645616), we get a palindrome (777866585668777).

The spelling of 616546045023161 in words is "six hundred sixteen trillion, five hundred forty-six billion, forty-five million, twenty-three thousand, one hundred sixty-one".