51431345004 has 24 divisors (see below), whose sum is σ = 129237739120. Its totient is φ = 15825029184.

The previous prime is 51431344999. The next prime is 51431345123. The reversal of 51431345004 is 40054313415.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164843899 + ... + 164844210.

Almost surely, 2^51431345004 is an apocalyptic number.

It is an amenable number.

51431345004 is an abundant number, since it is smaller than the sum of its proper divisors (77806394116).

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

51431345004 is a wasteful number, since it uses less digits than its factorization.

51431345004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329688129 (or 329688127 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 51431345004 its reverse (40054313415), we get a palindrome (91485658419).

The spelling of 51431345004 in words is "fifty-one billion, four hundred thirty-one million, three hundred forty-five thousand, four".