50511490000 has 100 divisors (see below), whose sum is σ = 123438911904. Its totient is φ = 20015344000.

The previous prime is 50511489967. The next prime is 50511490009. The reversal of 50511490000 is 9411505.

It is a tau number, because it is divible by the number of its divisors (100).

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50511490009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1046397 + ... + 1093603.

Almost surely, 2^50511490000 is an apocalyptic number.

50511490000 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 50511490000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61719455952).

50511490000 is an abundant number, since it is smaller than the sum of its proper divisors (72927421904).

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

50511490000 is a wasteful number, since it uses less digits than its factorization.

50511490000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47342 (or 47321 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 25.

The spelling of 50511490000 in words is "fifty billion, five hundred eleven million, four hundred ninety thousand".