51255330460 has 24 divisors (see below), whose sum is σ = 108642144240. Its totient is φ = 20310522624.

The previous prime is 51255330457. The next prime is 51255330479. The reversal of 51255330460 is 6403355215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11973405 + ... + 11977684.

It is an arithmetic number, because the mean of its divisors is an integer number (4526756010).

Almost surely, 2^51255330460 is an apocalyptic number.

It is an amenable number.

51255330460 is an abundant number, since it is smaller than the sum of its proper divisors (57386813780).

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

51255330460 is a wasteful number, since it uses less digits than its factorization.

51255330460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23951205 (or 23951203 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 34.

Adding to 51255330460 its reverse (6403355215), we get a palindrome (57658685675).

The spelling of 51255330460 in words is "fifty-one billion, two hundred fifty-five million, three hundred thirty thousand, four hundred sixty".