51166515044 has 24 divisors (see below), whose sum is σ = 94942112160. Its totient is φ = 24059854656.

The previous prime is 51166515013. The next prime is 51166515067. The reversal of 51166515044 is 44051566115.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 51166514989 and 51166515007.

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 in 7 ways as a sum of consecutive naturals, for example, 2446682 + ... + 2467505.

It is an arithmetic number, because the mean of its divisors is an integer number (3955921340).

Almost surely, 2^51166515044 is an apocalyptic number.

It is an amenable number.

51166515044 is a deficient number, since it is larger than the sum of its proper divisors (43775597116).

51166515044 is a wasteful number, since it uses less digits than its factorization.

51166515044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4914347 (or 4914345 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 38.

The spelling of 51166515044 in words is "fifty-one billion, one hundred sixty-six million, five hundred fifteen thousand, forty-four".