51358678332 has 96 divisors (see below), whose sum is σ = 134306726400. Its totient is φ = 15166163712.

The previous prime is 51358678313. The next prime is 51358678337. The reversal of 51358678332 is 23387685315.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51358678337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 721519 + ... + 789497.

It is an arithmetic number, because the mean of its divisors is an integer number (1399028400).

Almost surely, 2^51358678332 is an apocalyptic number.

51358678332 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51358678332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67153363200).

51358678332 is an abundant number, since it is smaller than the sum of its proper divisors (82948048068).

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

51358678332 is a wasteful number, since it uses less digits than its factorization.

51358678332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68195 (or 68193 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 51.

The spelling of 51358678332 in words is "fifty-one billion, three hundred fifty-eight million, six hundred seventy-eight thousand, three hundred thirty-two".