5161051065561 has 8 divisors (see below), whose sum is σ = 6882697618560. Its totient is φ = 3440052611472.

The previous prime is 5161051065463. The next prime is 5161051065589. The reversal of 5161051065561 is 1655601501615.

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

It is not a de Polignac number, because 5161051065561 - 2¹⁵ = 5161051032793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5161051065361) 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, 162006145 + ... + 162037998.

It is an arithmetic number, because the mean of its divisors is an integer number (860337202320).

Almost surely, 2^{5161051065561} is an apocalyptic number.

It is an amenable number.

5161051065561 is a deficient number, since it is larger than the sum of its proper divisors (1721646552999).

5161051065561 is a wasteful number, since it uses less digits than its factorization.

5161051065561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324049455.

The product of its (nonzero) digits is 135000, while the sum is 42.

The spelling of 5161051065561 in words is "five trillion, one hundred sixty-one billion, fifty-one million, sixty-five thousand, five hundred sixty-one".