51368210668064 has 48 divisors (see below), whose sum is σ = 103347167148288. Its totient is φ = 25121991240192.

The previous prime is 51368210668063. The next prime is 51368210668133. The reversal of 51368210668064 is 46086601286315.

It is not an unprimeable number, because it can be changed into a prime (51368210668063) 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, 8209829 + ... + 13043684.

It is an arithmetic number, because the mean of its divisors is an integer number (2153065982256).

Almost surely, 2^{51368210668064} is an apocalyptic number.

It is an amenable number.

51368210668064 is an abundant number, since it is smaller than the sum of its proper divisors (51978956480224).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51368210668064 is a wasteful number, since it uses less digits than its factorization.

51368210668064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21255177 (or 21255169 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 56.

The spelling of 51368210668064 in words is "fifty-one trillion, three hundred sixty-eight billion, two hundred ten million, six hundred sixty-eight thousand, sixty-four".