51045033664 has 28 divisors (see below), whose sum is σ = 101534290200. Its totient is φ = 25461590528.

The previous prime is 51045033643. The next prime is 51045033749. The reversal of 51045033664 is 46633054015.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 924949 + ... + 978580.

It is an arithmetic number, because the mean of its divisors is an integer number (3626224650).

Almost surely, 2^51045033664 is an apocalyptic number.

It is an amenable number.

51045033664 is a deficient number, since it is larger than the sum of its proper divisors (50489256536).

51045033664 is a wasteful number, since it uses less digits than its factorization.

51045033664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1903960 (or 1903950 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 37.

Adding to 51045033664 its reverse (46633054015), we get a palindrome (97678087679).

The spelling of 51045033664 in words is "fifty-one billion, forty-five million, thirty-three thousand, six hundred sixty-four".