51755844815207 has 8 divisors (see below), whose sum is σ = 55742855849184. Its totient is φ = 47769661238688.

The previous prime is 51755844815197. The next prime is 51755844815221. The reversal of 51755844815207 is 70251844855715.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51755844815207 - 2²² = 51755840620903 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51755844815207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51755844815107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206734448 + ... + 206984645.

It is an arithmetic number, because the mean of its divisors is an integer number (6967856981148).

Almost surely, 2^{51755844815207} is an apocalyptic number.

51755844815207 is a deficient number, since it is larger than the sum of its proper divisors (3987011033977).

51755844815207 is a wasteful number, since it uses less digits than its factorization.

51755844815207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413728729.

The product of its (nonzero) digits is 62720000, while the sum is 62.

The spelling of 51755844815207 in words is "fifty-one trillion, seven hundred fifty-five billion, eight hundred forty-four million, eight hundred fifteen thousand, two hundred seven".