51374612110878 has 128 divisors (see below), whose sum is σ = 130842653322240. Its totient is φ = 14637146342400.

The previous prime is 51374612110873. The next prime is 51374612110909. The reversal of 51374612110878 is 87801121647315.

It is a happy number.

51374612110878 is a `hidden beast` number, since 5 + 1 + 3 + 7 + 4 + 612 + 1 + 10 + 8 + 7 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51374612110873) 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, 485451426 + ... + 485557242.

It is an arithmetic number, because the mean of its divisors is an integer number (1022208229080).

Almost surely, 2^{51374612110878} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51374612110878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65421326661120).

51374612110878 is an abundant number, since it is smaller than the sum of its proper divisors (79468041211362).

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

51374612110878 is a wasteful number, since it uses less digits than its factorization.

51374612110878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109439 (or 109433 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 54.

The spelling of 51374612110878 in words is "fifty-one trillion, three hundred seventy-four billion, six hundred twelve million, one hundred ten thousand, eight hundred seventy-eight".