51525142504 has 96 divisors (see below), whose sum is σ = 109246072320. Its totient is φ = 22752576000.

The previous prime is 51525142499. The next prime is 51525142523. The reversal of 51525142504 is 40524152515.

It is a self number, because there is not a number n which added to its sum of digits gives 51525142504.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7946944 + ... + 7953424.

It is an arithmetic number, because the mean of its divisors is an integer number (1137979920).

Almost surely, 2^51525142504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51525142504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54623036160).

51525142504 is an abundant number, since it is smaller than the sum of its proper divisors (57720929816).

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

51525142504 is a wasteful number, since it uses less digits than its factorization.

51525142504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6743 (or 6728 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 34.

It can be divided in two parts, 515251 and 42504, that added together give a palindrome (557755).

The spelling of 51525142504 in words is "fifty-one billion, five hundred twenty-five million, one hundred forty-two thousand, five hundred four".