51381600636827 has 8 divisors (see below), whose sum is σ = 52406345806416. Its totient is φ = 50358902912032.

The previous prime is 51381600636823. The next prime is 51381600636829. The reversal of 51381600636827 is 72863600618315.

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 51381600636827 - 2² = 51381600636823 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51381600636823) 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, 511810508 + ... + 511910889.

It is an arithmetic number, because the mean of its divisors is an integer number (6550793225802).

Almost surely, 2^{51381600636827} is an apocalyptic number.

51381600636827 is a deficient number, since it is larger than the sum of its proper divisors (1024745169589).

51381600636827 is a wasteful number, since it uses less digits than its factorization.

51381600636827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1023722397.

The product of its (nonzero) digits is 8709120, while the sum is 56.

The spelling of 51381600636827 in words is "fifty-one trillion, three hundred eighty-one billion, six hundred million, six hundred thirty-six thousand, eight hundred twenty-seven".