51120663772456 has 32 divisors (see below), whose sum is σ = 101750451777000. Its totient is φ = 23994940297216.

The previous prime is 51120663772433. The next prime is 51120663772457. The reversal of 51120663772456 is 65427736602115.

It is a happy number.

51120663772456 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 45467158928356 + 5653504844100 = 6742934^2 + 2377710^2 .

It is a super-3 number, since 3×51120663772456³ (a number of 42 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 51120663772397 and 51120663772406.

It is not an unprimeable number, because it can be changed into a prime (51120663772457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 483092641 + ... + 483198448.

Almost surely, 2^{51120663772456} is an apocalyptic number.

It is an amenable number.

51120663772456 is a deficient number, since it is larger than the sum of its proper divisors (50629788004544).

51120663772456 is a wasteful number, since it uses less digits than its factorization.

51120663772456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 966291501 (or 966291497 counting only the distinct ones).

The product of its (nonzero) digits is 12700800, while the sum is 55.

The spelling of 51120663772456 in words is "fifty-one trillion, one hundred twenty billion, six hundred sixty-three million, seven hundred seventy-two thousand, four hundred fifty-six".