50400000000 has 648 divisors, whose sum is σ = 207949112280. Its totient is φ = 11520000000.

The previous prime is 50399999999. The next prime is 50400000019. The reversal of 50400000000 is 405.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 7199999997 + ... + 7200000003.

Almost surely, 2^50400000000 is an apocalyptic number.

50400000000 is a gapful number since it is divisible by the number (50) 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 50400000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103974556140).

50400000000 is an abundant number, since it is smaller than the sum of its proper divisors (157549112280).

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

50400000000 is an frugal number, since it uses more digits than its factorization.

50400000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75 (or 17 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 9.

Adding to 50400000000 its reverse (405), we get a palindrome (50400000405).

The spelling of 50400000000 in words is "fifty billion, four hundred million", and thus it is an aban number.