51286550266608 has 40 divisors (see below), whose sum is σ = 134086522996608. Its totient is φ = 16889546672832.

The previous prime is 51286550266607. The next prime is 51286550266711. The reversal of 51286550266608 is 80666205568215.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51286550266607) 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, 6436561060 + ... + 6436569027.

Almost surely, 2^{51286550266608} is an apocalyptic number.

It is an amenable number.

51286550266608 is an abundant number, since it is smaller than the sum of its proper divisors (82799972730000).

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

51286550266608 is a wasteful number, since it uses less digits than its factorization.

51286550266608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12873130181 (or 12873130175 counting only the distinct ones).

The product of its (nonzero) digits is 41472000, while the sum is 60.

The spelling of 51286550266608 in words is "fifty-one trillion, two hundred eighty-six billion, five hundred fifty million, two hundred sixty-six thousand, six hundred eight".