51211212448 has 48 divisors (see below), whose sum is σ = 110509146720. Its totient is φ = 23167468800.

The previous prime is 51211212427. The next prime is 51211212467. The reversal of 51211212448 is 84421211215.

51211212448 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 270483 + ... + 419026.

It is an arithmetic number, because the mean of its divisors is an integer number (2302273890).

Almost surely, 2^51211212448 is an apocalyptic number.

It is an amenable number.

51211212448 is an abundant number, since it is smaller than the sum of its proper divisors (59297934272).

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

51211212448 is a wasteful number, since it uses less digits than its factorization.

51211212448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689741 (or 689733 counting only the distinct ones).

The product of its digits is 5120, while the sum is 31.

The spelling of 51211212448 in words is "fifty-one billion, two hundred eleven million, two hundred twelve thousand, four hundred forty-eight".