51550425012 has 24 divisors (see below), whose sum is σ = 120288898912. Its totient is φ = 17182821600.

The previous prime is 51550425001. The next prime is 51550425019. The reversal of 51550425012 is 21052405515.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51550425019) 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, 330087 + ... + 460497.

Almost surely, 2^51550425012 is an apocalyptic number.

It is an amenable number.

51550425012 is an abundant number, since it is smaller than the sum of its proper divisors (68738473900).

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

51550425012 is a wasteful number, since it uses less digits than its factorization.

51550425012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163359 (or 163357 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 30.

The spelling of 51550425012 in words is "fifty-one billion, five hundred fifty million, four hundred twenty-five thousand, twelve".