51012170464 has 12 divisors (see below), whose sum is σ = 100430210664. Its totient is φ = 25506085216.

The previous prime is 51012170459. The next prime is 51012170477. The reversal of 51012170464 is 46407121015.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 797065132 + ... + 797065195.

It is an arithmetic number, because the mean of its divisors is an integer number (8369184222).

Almost surely, 2^51012170464 is an apocalyptic number.

It is an amenable number.

51012170464 is a deficient number, since it is larger than the sum of its proper divisors (49418040200).

51012170464 is a wasteful number, since it uses less digits than its factorization.

51012170464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1594130337 (or 1594130329 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

Adding to 51012170464 its reverse (46407121015), we get a palindrome (97419291479).

The spelling of 51012170464 in words is "fifty-one billion, twelve million, one hundred seventy thousand, four hundred sixty-four".