50867864520 has 128 divisors (see below), whose sum is σ = 166616576640. Its totient is φ = 12321239040.

The previous prime is 50867864473. The next prime is 50867864573. The reversal of 50867864520 is 2546876805.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1617264 + ... + 1648416.

It is an arithmetic number, because the mean of its divisors is an integer number (1301692005).

Almost surely, 2^50867864520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50867864520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83308288320).

50867864520 is an abundant number, since it is smaller than the sum of its proper divisors (115748712120).

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

50867864520 is a wasteful number, since it uses less digits than its factorization.

50867864520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32415 (or 32411 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 51.

The spelling of 50867864520 in words is "fifty billion, eight hundred sixty-seven million, eight hundred sixty-four thousand, five hundred twenty".