51285330890424 has 96 divisors (see below), whose sum is σ = 140056335825120. Its totient is φ = 16952775856128.

The previous prime is 51285330890399. The next prime is 51285330890509. The reversal of 51285330890424 is 42409803358215.

51285330890424 is a `hidden beast` number, since 5 + 1 + 2 + 8 + 533 + 0 + 89 + 0 + 4 + 24 = 666.

It is a congruent number.

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, 6850152 + ... + 12226824.

It is an arithmetic number, because the mean of its divisors is an integer number (1458920164845).

Almost surely, 2^{51285330890424} 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 51285330890424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70028167912560).

51285330890424 is an abundant number, since it is smaller than the sum of its proper divisors (88771004934696).

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

51285330890424 is a wasteful number, since it uses less digits than its factorization.

51285330890424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5377789 (or 5377782 counting only the distinct ones).

The product of its (nonzero) digits is 8294400, while the sum is 54.

The spelling of 51285330890424 in words is "fifty-one trillion, two hundred eighty-five billion, three hundred thirty million, eight hundred ninety thousand, four hundred twenty-four".