50861803788 has 72 divisors (see below), whose sum is σ = 133760040960. Its totient is φ = 16277798880.

The previous prime is 50861803781. The next prime is 50861803801. The reversal of 50861803788 is 88730816805.

It is a happy number.

50861803788 is a `hidden beast` number, since 508 + 61 + 8 + 0 + 3 + 78 + 8 = 666.

50861803788 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-2 number, since 2×50861803788² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (50861803781) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37698 + ... + 321161.

Almost surely, 2^50861803788 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 50861803788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66880020480).

50861803788 is an abundant number, since it is smaller than the sum of its proper divisors (82898237172).

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

50861803788 is a wasteful number, since it uses less digits than its factorization.

50861803788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359027 (or 359022 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 54.

The spelling of 50861803788 in words is "fifty billion, eight hundred sixty-one million, eight hundred three thousand, seven hundred eighty-eight".