51045208280 has 64 divisors (see below), whose sum is σ = 128348750880. Its totient is φ = 18109158400.

The previous prime is 51045208243. The next prime is 51045208297. The reversal of 51045208280 is 8280254015.

It is a happy number.

It is a super-2 number, since 2×51045208280² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51045208280.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1396739 + ... + 1432818.

Almost surely, 2^51045208280 is an apocalyptic number.

It is an amenable number.

51045208280 is an abundant number, since it is smaller than the sum of its proper divisors (77303542600).

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

51045208280 is a wasteful number, since it uses less digits than its factorization.

51045208280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2829620 (or 2829616 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 35.

The spelling of 51045208280 in words is "fifty-one billion, forty-five million, two hundred eight thousand, two hundred eighty".