51906787212 has 72 divisors (see below), whose sum is σ = 141620159856. Its totient is φ = 14753636352.

The previous prime is 51906787183. The next prime is 51906787223. The reversal of 51906787212 is 21278760915.

51906787212 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 23 ways as a sum of consecutive naturals, for example, 115213 + ... + 342180.

Almost surely, 2^51906787212 is an apocalyptic number.

It is an amenable number.

51906787212 is an abundant number, since it is smaller than the sum of its proper divisors (89713372644).

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

51906787212 is a wasteful number, since it uses less digits than its factorization.

51906787212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457607 (or 457598 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 48.

The spelling of 51906787212 in words is "fifty-one billion, nine hundred six million, seven hundred eighty-seven thousand, two hundred twelve".