50861801796864 has 36 divisors (see below), whose sum is σ = 135366566242656. Its totient is φ = 16953933932032.

The previous prime is 50861801796833. The next prime is 50861801796907. The reversal of 50861801796864 is 46869710816805.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33113151444 + ... + 33113152979.

Almost surely, 2^{50861801796864} is an apocalyptic number.

It is an amenable number.

50861801796864 is an abundant number, since it is smaller than the sum of its proper divisors (84504764445792).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

50861801796864 is an equidigital number, since it uses as much as digits as its factorization.

50861801796864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66226304442 (or 66226304428 counting only the distinct ones).

The product of its (nonzero) digits is 139345920, while the sum is 69.

The spelling of 50861801796864 in words is "fifty trillion, eight hundred sixty-one billion, eight hundred one million, seven hundred ninety-six thousand, eight hundred sixty-four".