51423243016 has 16 divisors (see below), whose sum is σ = 102090262140. Its totient is φ = 24199173120.

The previous prime is 51423242993. The next prime is 51423243041. The reversal of 51423243016 is 61034232415.

It can be written as a sum of positive squares in 2 ways, for example, as 39821798916 + 11601444100 = 199554^2 + 107710^2 .

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, 189055905 + ... + 189056176.

Almost surely, 2^51423243016 is an apocalyptic number.

It is an amenable number.

51423243016 is a deficient number, since it is larger than the sum of its proper divisors (50667019124).

51423243016 is a wasteful number, since it uses less digits than its factorization.

51423243016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378112104 (or 378112100 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The spelling of 51423243016 in words is "fifty-one billion, four hundred twenty-three million, two hundred forty-three thousand, sixteen".