2516684678 has 4 divisors (see below), whose sum is σ = 3775027020. Its totient is φ = 1258342338.

The previous prime is 2516684671. The next prime is 2516684683. The reversal of 2516684678 is 8764866152.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2516684671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 629171168 + ... + 629171171.

It is an arithmetic number, because the mean of its divisors is an integer number (943756755).

Almost surely, 2^2516684678 is an apocalyptic number.

2516684678 is a deficient number, since it is larger than the sum of its proper divisors (1258342342).

2516684678 is a wasteful number, since it uses less digits than its factorization.

2516684678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1258342341.

The product of its digits is 3870720, while the sum is 53.

The square root of 2516684678 is about 50166.5693265944. The cubic root of 2516684678 is about 1360.2213952574.

The spelling of 2516684678 in words is "two billion, five hundred sixteen million, six hundred eighty-four thousand, six hundred seventy-eight".