50835778642640 has 80 divisors (see below), whose sum is σ = 119714204425536. Its totient is φ = 20074064640000.

The previous prime is 50835778642553. The next prime is 50835778642687. The reversal of 50835778642640 is 4624687753805.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8933006 + ... + 13471085.

Almost surely, 2^{50835778642640} is an apocalyptic number.

It is an amenable number.

50835778642640 is an abundant number, since it is smaller than the sum of its proper divisors (68878425782896).

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

50835778642640 is a wasteful number, since it uses less digits than its factorization.

50835778642640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22404468 (or 22404462 counting only the distinct ones).

The product of its (nonzero) digits is 270950400, while the sum is 65.

The spelling of 50835778642640 in words is "fifty trillion, eight hundred thirty-five billion, seven hundred seventy-eight million, six hundred forty-two thousand, six hundred forty".