50678768687440 has 20 divisors (see below), whose sum is σ = 117828137198484. Its totient is φ = 20271507474944.

The previous prime is 50678768687399. The next prime is 50678768687461. The reversal of 50678768687440 is 4478686787605.

It can be written as a sum of positive squares in 2 ways, for example, as 33378027226384 + 17300741461056 = 5777372^2 + 4159416^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 316742304217 + ... + 316742304376.

Almost surely, 2^{50678768687440} is an apocalyptic number.

It is an amenable number.

50678768687440 is an abundant number, since it is smaller than the sum of its proper divisors (67149368511044).

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

50678768687440 is a wasteful number, since it uses less digits than its factorization.

50678768687440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633484608606 (or 633484608600 counting only the distinct ones).

The product of its (nonzero) digits is 3034644480, while the sum is 76.

The spelling of 50678768687440 in words is "fifty trillion, six hundred seventy-eight billion, seven hundred sixty-eight million, six hundred eighty-seven thousand, four hundred forty".