50990043280 has 160 divisors (see below), whose sum is σ = 132566658048. Its totient is φ = 18079219200.

The previous prime is 50990043241. The next prime is 50990043347. The reversal of 50990043280 is 8234009905.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39012387 + ... + 39013693.

Almost surely, 2^50990043280 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 50990043280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66283329024).

50990043280 is an abundant number, since it is smaller than the sum of its proper divisors (81576614768).

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

50990043280 is a wasteful number, since it uses less digits than its factorization.

50990043280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2405 (or 2399 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 40.

The spelling of 50990043280 in words is "fifty billion, nine hundred ninety million, forty-three thousand, two hundred eighty".