51046547220 has 96 divisors (see below), whose sum is σ = 167170012800. Its totient is φ = 12895967232.

The previous prime is 51046547219. The next prime is 51046547257. The reversal of 51046547220 is 2274564015.

It is a happy number.

51046547220 is a `hidden beast` number, since 5 + 104 + 6 + 547 + 2 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2477389 + ... + 2497908.

It is an arithmetic number, because the mean of its divisors is an integer number (1741354300).

Almost surely, 2^51046547220 is an apocalyptic number.

It is an amenable number.

51046547220 is an abundant number, since it is smaller than the sum of its proper divisors (116123465580).

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

51046547220 is a wasteful number, since it uses less digits than its factorization.

51046547220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4975334 (or 4975326 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The spelling of 51046547220 in words is "fifty-one billion, forty-six million, five hundred forty-seven thousand, two hundred twenty".