2516378633 has 4 divisors (see below), whose sum is σ = 2603150340. Its totient is φ = 2429606928.

The previous prime is 2516378629. The next prime is 2516378653. The reversal of 2516378633 is 3368736152.

2516378633 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 699232249 + 1817146384 = 26443^2 + 42628^2 .

It is a cyclic number.

It is not a de Polignac number, because 2516378633 - 2² = 2516378629 is a prime.

It is a super-2 number, since 2×2516378633² = 12664322849237897378, 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 (2516378653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43385810 + ... + 43385867.

It is an arithmetic number, because the mean of its divisors is an integer number (650787585).

Almost surely, 2^2516378633 is an apocalyptic number.

It is an amenable number.

2516378633 is a deficient number, since it is larger than the sum of its proper divisors (86771707).

2516378633 is an equidigital number, since it uses as much as digits as its factorization.

2516378633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86771706.

The product of its digits is 544320, while the sum is 44.

The square root of 2516378633 is about 50163.5189455445. The cubic root of 2516378633 is about 1360.1662558067.

The spelling of 2516378633 in words is "two billion, five hundred sixteen million, three hundred seventy-eight thousand, six hundred thirty-three".