2516163881 has 16 divisors (see below), whose sum is σ = 3164807808. Its totient is φ = 1943289600.

The previous prime is 2516163827. The next prime is 2516163889. The reversal of 2516163881 is 1883616152.

It is not a de Polignac number, because 2516163881 - 2¹⁴ = 2516147497 is a prime.

It is a super-2 number, since 2×2516163881² = 12662161352097964322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2516163889) 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, 135890 + ... + 153291.

It is an arithmetic number, because the mean of its divisors is an integer number (197800488).

Almost surely, 2^2516163881 is an apocalyptic number.

It is an amenable number.

2516163881 is a deficient number, since it is larger than the sum of its proper divisors (648643927).

2516163881 is a wasteful number, since it uses less digits than its factorization.

2516163881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289312.

The product of its digits is 69120, while the sum is 41.

The square root of 2516163881 is about 50161.3783801841. The cubic root of 2516163881 is about 1360.1275617446.

The spelling of 2516163881 in words is "two billion, five hundred sixteen million, one hundred sixty-three thousand, eight hundred eighty-one".