51748397424 has 280 divisors, whose sum is σ = 153925860912. Its totient is φ = 16840949760.

The previous prime is 51748397423. The next prime is 51748397489. The reversal of 51748397424 is 42479384715.

51748397424 is a `hidden beast` number, since 51 + 7 + 4 + 83 + 97 + 424 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51748397423) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 182856387 + ... + 182856669.

Almost surely, 2^51748397424 is an apocalyptic number.

51748397424 is a gapful number since it is divisible by the number (54) 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 51748397424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76962930456).

51748397424 is an abundant number, since it is smaller than the sum of its proper divisors (102177463488).

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

51748397424 is a wasteful number, since it uses less digits than its factorization.

51748397424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627 (or 606 counting only the distinct ones).

The product of its digits is 6773760, while the sum is 54.

The spelling of 51748397424 in words is "fifty-one billion, seven hundred forty-eight million, three hundred ninety-seven thousand, four hundred twenty-four".