50019217920 has 480 divisors, whose sum is σ = 198690890112. Its totient is φ = 11391860736.

The previous prime is 50019217909. The next prime is 50019217933. The reversal of 50019217920 is 2971291005.

It is a tau number, because it is divible by the number of its divisors (480).

It is a super-2 number, since 2×50019217920² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 84349144 + ... + 84349736.

Almost surely, 2^50019217920 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 50019217920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99345445056).

50019217920 is an abundant number, since it is smaller than the sum of its proper divisors (148671672192).

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

50019217920 is a wasteful number, since it uses less digits than its factorization.

50019217920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1152 (or 1133 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 36.

The spelling of 50019217920 in words is "fifty billion, nineteen million, two hundred seventeen thousand, nine hundred twenty".