51390122512544 has 48 divisors (see below), whose sum is σ = 101616755143680. Its totient is φ = 25582928478720.

The previous prime is 51390122512541. The next prime is 51390122512577. The reversal of 51390122512544 is 44521522109315.

It is a junction number, because it is equal to n+sod(n) for n = 51390122512495 and 51390122512504.

It is not an unprimeable number, because it can be changed into a prime (51390122512541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3289079 + ... + 10658249.

It is an arithmetic number, because the mean of its divisors is an integer number (2117015732160).

Almost surely, 2^{51390122512544} is an apocalyptic number.

It is an amenable number.

51390122512544 is a deficient number, since it is larger than the sum of its proper divisors (50226632631136).

51390122512544 is a wasteful number, since it uses less digits than its factorization.

51390122512544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7370133 (or 7370125 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 44.

The spelling of 51390122512544 in words is "fifty-one trillion, three hundred ninety billion, one hundred twenty-two million, five hundred twelve thousand, five hundred forty-four".