51030245871 has 24 divisors (see below), whose sum is σ = 80611886160. Its totient is φ = 30850272000.

The previous prime is 51030245801. The next prime is 51030245899. The reversal of 51030245871 is 17854203015.

51030245871 is a `hidden beast` number, since 51 + 0 + 3 + 0 + 24 + 587 + 1 = 666.

It is not a de Polignac number, because 51030245871 - 2⁹ = 51030245359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51030245801) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 603016 + ... + 682413.

It is an arithmetic number, because the mean of its divisors is an integer number (3358828590).

Almost surely, 2^51030245871 is an apocalyptic number.

51030245871 is a deficient number, since it is larger than the sum of its proper divisors (29581640289).

51030245871 is a wasteful number, since it uses less digits than its factorization.

51030245871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1285847 (or 1285844 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

Adding to 51030245871 its reverse (17854203015), we get a palindrome (68884448886).

The spelling of 51030245871 in words is "fifty-one billion, thirty million, two hundred forty-five thousand, eight hundred seventy-one".