50515781720 has 16 divisors (see below), whose sum is σ = 113660508960. Its totient is φ = 20206312672.

The previous prime is 50515781713. The next prime is 50515781861. The reversal of 50515781720 is 2718751505.

50515781720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×50515781720³ (a number of 33 digits) contains 333 as substring.

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, 631447232 + ... + 631447311.

It is an arithmetic number, because the mean of its divisors is an integer number (7103781810).

Almost surely, 2^50515781720 is an apocalyptic number.

It is an amenable number.

50515781720 is an abundant number, since it is smaller than the sum of its proper divisors (63144727240).

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

50515781720 is a wasteful number, since it uses less digits than its factorization.

50515781720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1262894554 (or 1262894550 counting only the distinct ones).

The product of its (nonzero) digits is 98000, while the sum is 41.

The spelling of 50515781720 in words is "fifty billion, five hundred fifteen million, seven hundred eighty-one thousand, seven hundred twenty".