5221871261181 has 16 divisors (see below), whose sum is σ = 7736144126400. Its totient is φ = 3481230158064.

The previous prime is 5221871261171. The next prime is 5221871261261. The reversal of 5221871261181 is 1811621781225.

5221871261181 is a `hidden beast` number, since 5 + 2 + 2 + 18 + 7 + 12 + 611 + 8 + 1 = 666.

It is not a de Polignac number, because 5221871261181 - 2¹⁰ = 5221871260157 is a prime.

It is a super-2 number, since 2×5221871261181² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5221871261161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7350595 + ... + 8029631.

It is an arithmetic number, because the mean of its divisors is an integer number (483509007900).

Almost surely, 2^{5221871261181} is an apocalyptic number.

It is an amenable number.

5221871261181 is a deficient number, since it is larger than the sum of its proper divisors (2514272865219).

5221871261181 is a wasteful number, since it uses less digits than its factorization.

5221871261181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963865 (or 963859 counting only the distinct ones).

The product of its digits is 107520, while the sum is 45.

The spelling of 5221871261181 in words is "five trillion, two hundred twenty-one billion, eight hundred seventy-one million, two hundred sixty-one thousand, one hundred eighty-one".