5161771255698 has 160 divisors (see below), whose sum is σ = 11886602618880. Its totient is φ = 1673406812160.

The previous prime is 5161771255691. The next prime is 5161771255717. The reversal of 5161771255698 is 8965521771615.

It is a happy number.

5161771255698 is a `hidden beast` number, since 5 + 1 + 6 + 1 + 7 + 71 + 2 + 556 + 9 + 8 = 666.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5161771255691) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2114612158 + ... + 2114614598.

It is an arithmetic number, because the mean of its divisors is an integer number (74291266368).

Almost surely, 2^{5161771255698} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5161771255698, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5943301309440).

5161771255698 is an abundant number, since it is smaller than the sum of its proper divisors (6724831363182).

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

5161771255698 is a wasteful number, since it uses less digits than its factorization.

5161771255698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4134 (or 4125 counting only the distinct ones).

The product of its digits is 31752000, while the sum is 63.

The spelling of 5161771255698 in words is "five trillion, one hundred sixty-one billion, seven hundred seventy-one million, two hundred fifty-five thousand, six hundred ninety-eight".