51033412520 has 64 divisors (see below), whose sum is σ = 122850172800. Its totient is φ = 19021927680.

The previous prime is 51033412519. The next prime is 51033412523. The reversal of 51033412520 is 2521433015.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 51033412520.

It is not an unprimeable number, because it can be changed into a prime (51033412523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 504044 + ... + 596763.

It is an arithmetic number, because the mean of its divisors is an integer number (1919533950).

Almost surely, 2^51033412520 is an apocalyptic number.

It is an amenable number.

51033412520 is an abundant number, since it is smaller than the sum of its proper divisors (71816760280).

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

51033412520 is a wasteful number, since it uses less digits than its factorization.

51033412520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100898 (or 1100894 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 51033412520 its reverse (2521433015), we get a palindrome (53554845535).

The spelling of 51033412520 in words is "fifty-one billion, thirty-three million, four hundred twelve thousand, five hundred twenty".