51347581996 has 12 divisors (see below), whose sum is σ = 89866910448. Its totient is φ = 25671321872.

The previous prime is 51347581993. The next prime is 51347582029. The reversal of 51347581996 is 69918574315.

It is a self number, because there is not a number n which added to its sum of digits gives 51347581996.

It is not an unprimeable number, because it can be changed into a prime (51347581991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 570091 + ... + 653986.

It is an arithmetic number, because the mean of its divisors is an integer number (7488909204).

Almost surely, 2^51347581996 is an apocalyptic number.

It is an amenable number.

51347581996 is a deficient number, since it is larger than the sum of its proper divisors (38519328452).

51347581996 is a wasteful number, since it uses less digits than its factorization.

51347581996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1234568 (or 1234566 counting only the distinct ones).

The product of its digits is 8164800, while the sum is 58.

The spelling of 51347581996 in words is "fifty-one billion, three hundred forty-seven million, five hundred eighty-one thousand, nine hundred ninety-six".