51795478280 has 576 divisors, whose sum is σ = 160145320320. Its totient is φ = 14707630080.

The previous prime is 51795478279. The next prime is 51795478283. The reversal of 51795478280 is 8287459715.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is not an unprimeable number, because it can be changed into a prime (51795478283) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 773066807 + ... + 773066873.

It is an arithmetic number, because the mean of its divisors is an integer number (278030070).

Almost surely, 2^51795478280 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 51795478280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80072660160).

51795478280 is an abundant number, since it is smaller than the sum of its proper divisors (108349842040).

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

51795478280 is a wasteful number, since it uses less digits than its factorization.

51795478280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190 (or 142 counting only the distinct ones).

The product of its (nonzero) digits is 5644800, while the sum is 56.

The spelling of 51795478280 in words is "fifty-one billion, seven hundred ninety-five million, four hundred seventy-eight thousand, two hundred eighty".