50645757148865 has 16 divisors (see below), whose sum is σ = 63418008326400. Its totient is φ = 38754578799552.

The previous prime is 50645757148783. The next prime is 50645757148867. The reversal of 50645757148865 is 56884175754605.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50645757148865 is a prime.

It is not an unprimeable number, because it can be changed into a prime (50645757148867) 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, 7999751 + ... + 12856419.

It is an arithmetic number, because the mean of its divisors is an integer number (3963625520400).

Almost surely, 2^{50645757148865} is an apocalyptic number.

It is an amenable number.

50645757148865 is a deficient number, since it is larger than the sum of its proper divisors (12772251177535).

50645757148865 is a wasteful number, since it uses less digits than its factorization.

50645757148865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4947376.

The product of its (nonzero) digits is 1128960000, while the sum is 71.

The spelling of 50645757148865 in words is "fifty trillion, six hundred forty-five billion, seven hundred fifty-seven million, one hundred forty-eight thousand, eight hundred sixty-five".