51004401545104 has 80 divisors (see below), whose sum is σ = 114095401176960. Its totient is φ = 21635225164800.

The previous prime is 51004401545099. The next prime is 51004401545143. The reversal of 51004401545104 is 40154510440015.

It is a self number, because there is not a number n which added to its sum of digits gives 51004401545104.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32478892 + ... + 34013044.

It is an arithmetic number, because the mean of its divisors is an integer number (1426192514712).

Almost surely, 2^{51004401545104} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51004401545104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57047700588480).

51004401545104 is an abundant number, since it is smaller than the sum of its proper divisors (63090999631856).

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

51004401545104 is a wasteful number, since it uses less digits than its factorization.

51004401545104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1537208 (or 1537202 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 34.

Adding to 51004401545104 its reverse (40154510440015), we get a palindrome (91158911985119).

The spelling of 51004401545104 in words is "fifty-one trillion, four billion, four hundred one million, five hundred forty-five thousand, one hundred four".