50368363978 has 4 divisors (see below), whose sum is σ = 75552545970. Its totient is φ = 25184181988.

The previous prime is 50368363961. The next prime is 50368364021. The reversal of 50368363978 is 87936386305.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87936386305 = 5 ⋅17587277261.

It can be written as a sum of positive squares in only one way, i.e., 37629404289 + 12738959689 = 193983^2 + 112867^2 .

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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 as a sum of consecutive naturals, namely, 12592090993 + ... + 12592090996.

Almost surely, 2^50368363978 is an apocalyptic number.

50368363978 is a deficient number, since it is larger than the sum of its proper divisors (25184181992).

50368363978 is a wasteful number, since it uses less digits than its factorization.

50368363978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25184181991.

The product of its (nonzero) digits is 19595520, while the sum is 58.

The spelling of 50368363978 in words is "fifty billion, three hundred sixty-eight million, three hundred sixty-three thousand, nine hundred seventy-eight".