50400513178 has 4 divisors (see below), whose sum is σ = 75600769770. Its totient is φ = 25200256588.

The previous prime is 50400513167. The next prime is 50400513179. The reversal of 50400513178 is 87131500405.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 30647053969 + 19753459209 = 175063^2 + 140547^2 .

It is not an unprimeable number, because it can be changed into a prime (50400513179) by changing a digit.

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, 12600128293 + ... + 12600128296.

Almost surely, 2^50400513178 is an apocalyptic number.

50400513178 is a deficient number, since it is larger than the sum of its proper divisors (25200256592).

50400513178 is a wasteful number, since it uses less digits than its factorization.

50400513178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25200256591.

The product of its (nonzero) digits is 16800, while the sum is 34.

The spelling of 50400513178 in words is "fifty billion, four hundred million, five hundred thirteen thousand, one hundred seventy-eight".