51142662051426 has 384 divisors, whose sum is σ = 133888062986496. Its totient is φ = 13931187978240.

The previous prime is 51142662051367. The next prime is 51142662051499. The reversal of 51142662051426 is 62415026624115.

51142662051426 is a `hidden beast` number, since 5 + 1 + 1 + 4 + 2 + 6 + 620 + 5 + 14 + 2 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1622891046 + ... + 1622922558.

It is an arithmetic number, because the mean of its divisors is an integer number (348666830694).

Almost surely, 2^{51142662051426} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51142662051426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66944031493248).

51142662051426 is an abundant number, since it is smaller than the sum of its proper divisors (82745400935070).

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

51142662051426 is a wasteful number, since it uses less digits than its factorization.

51142662051426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31826 (or 31823 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 45.

The spelling of 51142662051426 in words is "fifty-one trillion, one hundred forty-two billion, six hundred sixty-two million, fifty-one thousand, four hundred twenty-six".