51227447243328 has 168 divisors, whose sum is σ = 152545938435072. Its totient is φ = 17045156104704.

The previous prime is 51227447243311. The next prime is 51227447243369. The reversal of 51227447243328 is 82334274472215.

51227447243328 is a `hidden beast` number, since 5 + 1 + 2 + 2 + 74 + 4 + 7 + 243 + 328 = 666.

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

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, 5705601 + ... + 11619327.

It is an arithmetic number, because the mean of its divisors is an integer number (908011538304).

Almost surely, 2^{51227447243328} 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 51227447243328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76272969217536).

51227447243328 is an abundant number, since it is smaller than the sum of its proper divisors (101318491191744).

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

51227447243328 is an equidigital number, since it uses as much as digits as its factorization.

51227447243328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5914311 (or 5914289 counting only the distinct ones).

The product of its digits is 18063360, while the sum is 54.

The spelling of 51227447243328 in words is "fifty-one trillion, two hundred twenty-seven billion, four hundred forty-seven million, two hundred forty-three thousand, three hundred twenty-eight".