5121978607 has 2 divisors, whose sum is σ = 5121978608. Its totient is φ = 5121978606.

The previous prime is 5121978601. The next prime is 5121978679. The reversal of 5121978607 is 7068791215.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5121978607 - 2⁷ = 5121978479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5121978601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2560989303 + 2560989304.

It is an arithmetic number, because the mean of its divisors is an integer number (2560989304).

Almost surely, 2^5121978607 is an apocalyptic number.

5121978607 is a deficient number, since it is larger than the sum of its proper divisors (1).

5121978607 is an equidigital number, since it uses as much as digits as its factorization.

5121978607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 211680, while the sum is 46.

The square root of 5121978607 is about 71567.9998812318. Note that the first 3 decimals coincide. The cubic root of 5121978607 is about 1723.7697432007.

The spelling of 5121978607 in words is "five billion, one hundred twenty-one million, nine hundred seventy-eight thousand, six hundred seven".