51343521212 has 12 divisors (see below), whose sum is σ = 89852983080. Its totient is φ = 25671240336.

The previous prime is 51343521197. The next prime is 51343521241. The reversal of 51343521212 is 21212534315.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167738 + ... + 361694.

It is an arithmetic number, because the mean of its divisors is an integer number (7487748590).

Almost surely, 2^51343521212 is an apocalyptic number.

It is an amenable number.

51343521212 is a deficient number, since it is larger than the sum of its proper divisors (38509461868).

51343521212 is a wasteful number, since it uses less digits than its factorization.

51343521212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260140 (or 260138 counting only the distinct ones).

The product of its digits is 7200, while the sum is 29.

The spelling of 51343521212 in words is "fifty-one billion, three hundred forty-three million, five hundred twenty-one thousand, two hundred twelve".