2516631481 has 16 divisors (see below), whose sum is σ = 3098592000. Its totient is φ = 1990410048.

The previous prime is 2516631451. The next prime is 2516631493. The reversal of 2516631481 is 1841366152.

It is a happy number.

2516631481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 2516631481 - 2⁵ = 2516631449 is a prime.

It is a super-2 number, since 2×2516631481² = 12666868022320506722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2516631481.

It is not an unprimeable number, because it can be changed into a prime (2516631451) 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, 392580 + ... + 398938.

It is an arithmetic number, because the mean of its divisors is an integer number (193662000).

Almost surely, 2^2516631481 is an apocalyptic number.

It is an amenable number.

2516631481 is a deficient number, since it is larger than the sum of its proper divisors (581960519).

2516631481 is a wasteful number, since it uses less digits than its factorization.

2516631481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10728.

The product of its digits is 34560, while the sum is 37.

The square root of 2516631481 is about 50166.0391201059. The cubic root of 2516631481 is about 1360.2118111926.

The spelling of 2516631481 in words is "two billion, five hundred sixteen million, six hundred thirty-one thousand, four hundred eighty-one".