51394544352 has 216 divisors, whose sum is σ = 152707601592. Its totient is φ = 16390133760.

The previous prime is 51394544351. The next prime is 51394544359. The reversal of 51394544352 is 25344549315.

51394544352 is a `hidden beast` number, since 5 + 13 + 94 + 544 + 3 + 5 + 2 = 666.

It is a super-3 number, since 3×51394544352³ (a number of 33 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51394544298 and 51394544307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51394544351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 25657783 + ... + 25659785.

It is an arithmetic number, because the mean of its divisors is an integer number (706979637).

Almost surely, 2^51394544352 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 51394544352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76353800796).

51394544352 is an abundant number, since it is smaller than the sum of its proper divisors (101313057240).

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

51394544352 is a wasteful number, since it uses less digits than its factorization.

51394544352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2154 (or 2102 counting only the distinct ones).

The product of its digits is 1296000, while the sum is 45.

The spelling of 51394544352 in words is "fifty-one billion, three hundred ninety-four million, five hundred forty-four thousand, three hundred fifty-two".