51188528508 has 48 divisors (see below), whose sum is σ = 134220097536. Its totient is φ = 15065519040.

The previous prime is 51188528467. The next prime is 51188528519. The reversal of 51188528508 is 80582588115.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7129708 + ... + 7136883.

It is an arithmetic number, because the mean of its divisors is an integer number (2796252032).

Almost surely, 2^51188528508 is an apocalyptic number.

It is an amenable number.

51188528508 is an abundant number, since it is smaller than the sum of its proper divisors (83031569028).

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

51188528508 is a wasteful number, since it uses less digits than its factorization.

51188528508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14266634 (or 14266632 counting only the distinct ones).

The product of its (nonzero) digits is 1024000, while the sum is 51.

The spelling of 51188528508 in words is "fifty-one billion, one hundred eighty-eight million, five hundred twenty-eight thousand, five hundred eight".