51180516251 has 16 divisors (see below), whose sum is σ = 56564697600. Its totient is φ = 46061355648.

The previous prime is 51180516241. The next prime is 51180516253. The reversal of 51180516251 is 15261508115.

It is a cyclic number.

It is not a de Polignac number, because 51180516251 - 2¹⁰ = 51180515227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51180516253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1373180 + ... + 1409958.

It is an arithmetic number, because the mean of its divisors is an integer number (3535293600).

Almost surely, 2^51180516251 is an apocalyptic number.

51180516251 is a deficient number, since it is larger than the sum of its proper divisors (5384181349).

51180516251 is a wasteful number, since it uses less digits than its factorization.

51180516251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40378.

The product of its (nonzero) digits is 12000, while the sum is 35.

The spelling of 51180516251 in words is "fifty-one billion, one hundred eighty million, five hundred sixteen thousand, two hundred fifty-one".