50661800896 has 84 divisors (see below), whose sum is σ = 117139413168. Its totient is φ = 21676182528.

The previous prime is 50661800881. The next prime is 50661800899. The reversal of 50661800896 is 69800816605.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50661800899) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1921821 + ... + 1948003.

Almost surely, 2^50661800896 is an apocalyptic number.

50661800896 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50661800896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58569706584).

50661800896 is an abundant number, since it is smaller than the sum of its proper divisors (66477612272).

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

50661800896 is a wasteful number, since it uses less digits than its factorization.

50661800896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26826 (or 26809 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 49.

The spelling of 50661800896 in words is "fifty billion, six hundred sixty-one million, eight hundred thousand, eight hundred ninety-six".