50778205338871 has 2 divisors, whose sum is σ = 50778205338872. Its totient is φ = 50778205338870.

The previous prime is 50778205338803. The next prime is 50778205339019. The reversal of 50778205338871 is 17883350287705.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 50778205338871 - 2⁹ = 50778205338359 is a prime.

It is a super-2 number, since 2×50778205338871² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50778205338271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25389102669435 + 25389102669436.

It is an arithmetic number, because the mean of its divisors is an integer number (25389102669436).

Almost surely, 2^{50778205338871} is an apocalyptic number.

50778205338871 is a deficient number, since it is larger than the sum of its proper divisors (1).

50778205338871 is an equidigital number, since it uses as much as digits as its factorization.

50778205338871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 79027200, while the sum is 64.

The spelling of 50778205338871 in words is "fifty trillion, seven hundred seventy-eight billion, two hundred five million, three hundred thirty-eight thousand, eight hundred seventy-one".