51216424004 has 12 divisors (see below), whose sum is σ = 91713131664. Its totient is φ = 25012672104.

The previous prime is 51216424001. The next prime is 51216424031. The reversal of 51216424004 is 40042461215.

It is not an unprimeable number, because it can be changed into a prime (51216424001) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 148884782 + ... + 148885125.

It is an arithmetic number, because the mean of its divisors is an integer number (7642760972).

Almost surely, 2^51216424004 is an apocalyptic number.

It is an amenable number.

51216424004 is a deficient number, since it is larger than the sum of its proper divisors (40496707660).

51216424004 is a wasteful number, since it uses less digits than its factorization.

51216424004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297769954 (or 297769952 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 51216424004 its reverse (40042461215), we get a palindrome (91258885219).

The spelling of 51216424004 in words is "fifty-one billion, two hundred sixteen million, four hundred twenty-four thousand, four".