51504245215 has 16 divisors (see below), whose sum is σ = 63848779776. Its totient is φ = 39843021600.

The previous prime is 51504245213. The next prime is 51504245333. The reversal of 51504245215 is 51254240515.

It is not a de Polignac number, because 51504245215 - 2¹ = 51504245213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51504245213) 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, 69370 + ... + 328360.

It is an arithmetic number, because the mean of its divisors is an integer number (3990548736).

Almost surely, 2^51504245215 is an apocalyptic number.

51504245215 is a deficient number, since it is larger than the sum of its proper divisors (12344534561).

51504245215 is a wasteful number, since it uses less digits than its factorization.

51504245215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260310.

The product of its (nonzero) digits is 40000, while the sum is 34.

The spelling of 51504245215 in words is "fifty-one billion, five hundred four million, two hundred forty-five thousand, two hundred fifteen".