51214987028 has 24 divisors (see below), whose sum is σ = 89842583040. Its totient is φ = 25545754080.

The previous prime is 51214987013. The next prime is 51214987063. The reversal of 51214987028 is 82078941215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2936558 + ... + 2953946.

It is an arithmetic number, because the mean of its divisors is an integer number (3743440960).

Almost surely, 2^51214987028 is an apocalyptic number.

It is an amenable number.

51214987028 is a deficient number, since it is larger than the sum of its proper divisors (38627596012).

51214987028 is a wasteful number, since it uses less digits than its factorization.

51214987028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19127 (or 19125 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 47.

The spelling of 51214987028 in words is "fifty-one billion, two hundred fourteen million, nine hundred eighty-seven thousand, twenty-eight".