2516805140 has 12 divisors (see below), whose sum is σ = 5285290836. Its totient is φ = 1006722048.

The previous prime is 2516805133. The next prime is 2516805169. The reversal of 2516805140 is 415086152.

It can be written as a sum of positive squares in 2 ways, for example, as 600642064 + 1916163076 = 24508^2 + 43774^2 .

It is a super-2 number, since 2×2516805140² = 12668616225460839200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2516805097 and 2516805106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62920109 + ... + 62920148.

It is an arithmetic number, because the mean of its divisors is an integer number (440440903).

Almost surely, 2^2516805140 is an apocalyptic number.

2516805140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2516805140 is an abundant number, since it is smaller than the sum of its proper divisors (2768485696).

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

2516805140 is a wasteful number, since it uses less digits than its factorization.

2516805140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125840266 (or 125840264 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 2516805140 is about 50167.7699324975. The cubic root of 2516805140 is about 1360.2430974035.

The spelling of 2516805140 in words is "two billion, five hundred sixteen million, eight hundred five thousand, one hundred forty".