629631678850 has 24 divisors (see below), whose sum is σ = 1171516673268. Its totient is φ = 251766273600.

The previous prime is 629631678821. The next prime is 629631678881. The reversal of 629631678850 is 58876136926.

It can be written as a sum of positive squares in 6 ways, for example, as 525716353969 + 103915324881 = 725063^2 + 322359^2 .

It is a super-2 number, since 2×629631678850² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2012641 + ... + 2304340.

Almost surely, 2^629631678850 is an apocalyptic number.

629631678850 is a deficient number, since it is larger than the sum of its proper divisors (541884994418).

629631678850 is a wasteful number, since it uses less digits than its factorization.

629631678850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4319910 (or 4319905 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 61.

The spelling of 629631678850 in words is "six hundred twenty-nine billion, six hundred thirty-one million, six hundred seventy-eight thousand, eight hundred fifty".