5161271565312 has 264 divisors, whose sum is σ = 14960728469232. Its totient is φ = 1713782784000.

The previous prime is 5161271565311. The next prime is 5161271565377. The reversal of 5161271565312 is 2135651721615.

5161271565312 is a `hidden beast` number, since 5 + 1 + 6 + 1 + 2 + 71 + 565 + 3 + 12 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5161271565311) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3792263512 + ... + 3792264872.

Almost surely, 2^{5161271565312} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5161271565312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7480364234616).

5161271565312 is an abundant number, since it is smaller than the sum of its proper divisors (9799456903920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5161271565312 is a wasteful number, since it uses less digits than its factorization.

5161271565312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2675 (or 2654 counting only the distinct ones).

The product of its digits is 378000, while the sum is 45.

The spelling of 5161271565312 in words is "five trillion, one hundred sixty-one billion, two hundred seventy-one million, five hundred sixty-five thousand, three hundred twelve".