51447700678751 has 8 divisors (see below), whose sum is σ = 56902654389504. Its totient is φ = 46206666721440.

The previous prime is 51447700678747. The next prime is 51447700678753. The reversal of 51447700678751 is 15787600774415.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51447700678751 - 2² = 51447700678747 is a prime.

It is a super-2 number, since 2×51447700678751² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51447700678753) 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, 53479937855 + ... + 53479938816.

It is an arithmetic number, because the mean of its divisors is an integer number (7112831798688).

Almost surely, 2^{51447700678751} is an apocalyptic number.

51447700678751 is a deficient number, since it is larger than the sum of its proper divisors (5454953710753).

51447700678751 is a wasteful number, since it uses less digits than its factorization.

51447700678751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106959876721.

The product of its (nonzero) digits is 46099200, while the sum is 62.

The spelling of 51447700678751 in words is "fifty-one trillion, four hundred forty-seven billion, seven hundred million, six hundred seventy-eight thousand, seven hundred fifty-one".