51040444410 has 128 divisors (see below), whose sum is σ = 138322552320. Its totient is φ = 13390272000.

The previous prime is 51040444391. The next prime is 51040444421. The reversal of 51040444410 is 1444404015.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8294835 + ... + 8300985.

It is an arithmetic number, because the mean of its divisors is an integer number (1080644940).

Almost surely, 2^51040444410 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51040444410, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69161276160).

51040444410 is an abundant number, since it is smaller than the sum of its proper divisors (87282107910).

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

51040444410 is a wasteful number, since it uses less digits than its factorization.

51040444410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6661 (or 6655 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

Adding to 51040444410 its reverse (1444404015), we get a palindrome (52484848425).

The spelling of 51040444410 in words is "fifty-one billion, forty million, four hundred forty-four thousand, four hundred ten".