51604333504 has 56 divisors (see below), whose sum is σ = 106346640240. Its totient is φ = 24815271936.

The previous prime is 51604333463. The next prime is 51604333513. The reversal of 51604333504 is 40533340615.

It is a self number, because there is not a number n which added to its sum of digits gives 51604333504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 422899 + ... + 531085.

Almost surely, 2^51604333504 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 51604333504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53173320120).

51604333504 is an abundant number, since it is smaller than the sum of its proper divisors (54742306736).

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

51604333504 is a wasteful number, since it uses less digits than its factorization.

51604333504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108485 (or 108475 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 34.

The spelling of 51604333504 in words is "fifty-one billion, six hundred four million, three hundred thirty-three thousand, five hundred four".