51528918612 has 48 divisors (see below), whose sum is σ = 129982879040. Its totient is φ = 15832495872.

The previous prime is 51528918563. The next prime is 51528918619. The reversal of 51528918612 is 21681982515.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51528918619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3045673 + ... + 3062544.

Almost surely, 2^51528918612 is an apocalyptic number.

It is an amenable number.

51528918612 is an abundant number, since it is smaller than the sum of its proper divisors (78453960428).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51528918612 is a wasteful number, since it uses less digits than its factorization.

51528918612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6108280 (or 6108278 counting only the distinct ones).

The product of its digits is 345600, while the sum is 48.

The spelling of 51528918612 in words is "fifty-one billion, five hundred twenty-eight million, nine hundred eighteen thousand, six hundred twelve".