51423120544 has 24 divisors (see below), whose sum is σ = 101362332960. Its totient is φ = 25680305856.

The previous prime is 51423120433. The next prime is 51423120563. The reversal of 51423120544 is 44502132415.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 949954 + ... + 1002625.

It is an arithmetic number, because the mean of its divisors is an integer number (4223430540).

Almost surely, 2^51423120544 is an apocalyptic number.

It is an amenable number.

51423120544 is a deficient number, since it is larger than the sum of its proper divisors (49939212416).

51423120544 is a wasteful number, since it uses less digits than its factorization.

51423120544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1953412 (or 1953404 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 51423120544 its reverse (44502132415), we get a palindrome (95925252959).

The spelling of 51423120544 in words is "fifty-one billion, four hundred twenty-three million, one hundred twenty thousand, five hundred forty-four".