51630366626 has 16 divisors (see below), whose sum is σ = 77652222648. Its totient is φ = 25746336000.

The previous prime is 51630366589. The next prime is 51630366653. The reversal of 51630366626 is 62666303615.

It can be written as a sum of positive squares in 4 ways, for example, as 34988076601 + 16642290025 = 187051^2 + 129005^2 .

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 2849636 + ... + 2867696.

Almost surely, 2^51630366626 is an apocalyptic number.

51630366626 is a deficient number, since it is larger than the sum of its proper divisors (26021856022).

51630366626 is a wasteful number, since it uses less digits than its factorization.

51630366626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21797.

The product of its (nonzero) digits is 699840, while the sum is 44.

The spelling of 51630366626 in words is "fifty-one billion, six hundred thirty million, three hundred sixty-six thousand, six hundred twenty-six".