51350534212 has 24 divisors (see below), whose sum is σ = 94033552536. Its totient is φ = 24509991168.

The previous prime is 51350534201. The next prime is 51350534219. The reversal of 51350534212 is 21243505315.

It can be written as a sum of positive squares in 4 ways, for example, as 9948865536 + 41401668676 = 99744^2 + 203474^2 .

It is not an unprimeable number, because it can be changed into a prime (51350534219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3265393 + ... + 3281080.

It is an arithmetic number, because the mean of its divisors is an integer number (3918064689).

Almost surely, 2^51350534212 is an apocalyptic number.

It is an amenable number.

51350534212 is a deficient number, since it is larger than the sum of its proper divisors (42683018324).

51350534212 is a wasteful number, since it uses less digits than its factorization.

51350534212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6546567 (or 6546565 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 31.

The spelling of 51350534212 in words is "fifty-one billion, three hundred fifty million, five hundred thirty-four thousand, two hundred twelve".