51913429682 has 8 divisors (see below), whose sum is σ = 77872648476. Its totient is φ = 25955880192.

The previous prime is 51913429681. The next prime is 51913429793. The reversal of 51913429682 is 28692431915.

It can be written as a sum of positive squares in 2 ways, for example, as 51248357161 + 665072521 = 226381^2 + 25789^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×51913429682² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51913429682.

It is not an unprimeable number, because it can be changed into a prime (51913429681) 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 3 ways as a sum of consecutive naturals, for example, 336443 + ... + 465854.

Almost surely, 2^51913429682 is an apocalyptic number.

51913429682 is a deficient number, since it is larger than the sum of its proper divisors (25959218794).

51913429682 is a wasteful number, since it uses less digits than its factorization.

51913429682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834652.

The product of its digits is 933120, while the sum is 50.

The spelling of 51913429682 in words is "fifty-one billion, nine hundred thirteen million, four hundred twenty-nine thousand, six hundred eighty-two".