51086121841326 has 128 divisors (see below), whose sum is σ = 120532429495296. Its totient is φ = 14230649825280.

The previous prime is 51086121841319. The next prime is 51086121841327. The reversal of 51086121841326 is 62314812168015.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51086121841327) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 246537975 + ... + 246745101.

It is an arithmetic number, because the mean of its divisors is an integer number (941659605432).

Almost surely, 2^{51086121841326} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51086121841326, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60266214747648).

51086121841326 is an abundant number, since it is smaller than the sum of its proper divisors (69446307653970).

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

51086121841326 is a wasteful number, since it uses less digits than its factorization.

51086121841326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208346.

The product of its (nonzero) digits is 552960, while the sum is 48.

The spelling of 51086121841326 in words is "fifty-one trillion, eighty-six billion, one hundred twenty-one million, eight hundred forty-one thousand, three hundred twenty-six".