51624159849 has 18 divisors (see below), whose sum is σ = 77051265018. Its totient is φ = 33305904000.

The previous prime is 51624159833. The next prime is 51624159857. The reversal of 51624159849 is 94895142615.

51624159849 is a `hidden beast` number, since 5 + 1 + 6 + 2 + 4 + 1 + 598 + 49 = 666.

It can be written as a sum of positive squares in only one way, i.e., 50819586624 + 804573225 = 225432^2 + 28365^2 .

It is not a de Polignac number, because 51624159849 - 2⁴ = 51624159833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51624159795 and 51624159804.

It is not an unprimeable number, because it can be changed into a prime (51624159889) 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 in 17 ways as a sum of consecutive naturals, for example, 2975752 + ... + 2993049.

Almost surely, 2^51624159849 is an apocalyptic number.

It is an amenable number.

51624159849 is a deficient number, since it is larger than the sum of its proper divisors (25427105169).

51624159849 is a wasteful number, since it uses less digits than its factorization.

51624159849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5968869 (or 5968835 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 54.

The spelling of 51624159849 in words is "fifty-one billion, six hundred twenty-four million, one hundred fifty-nine thousand, eight hundred forty-nine".