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50138981376 = 21031123312081
BaseRepresentation
bin101110101100100001…
…000010010000000000
311210102021100011020020
4232230201002100000
51310141034401001
635011124213440
73423330211161
oct565441022000
9153367304206
1050138981376
111a29a1698a0
12987353a280
1349607b1523
1425d8d8b768
151486b99736
hexbac842400

50138981376 has 352 divisors, whose sum is σ = 157108985856. Its totient is φ = 14057472000.

The previous prime is 50138981371. The next prime is 50138981423. The reversal of 50138981376 is 67318983105.

It is a tau number, because it is divible by the number of its divisors (352).

It is not an unprimeable number, because it can be changed into a prime (50138981371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24092656 + ... + 24094736.

Almost surely, 250138981376 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 50138981376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78554492928).

50138981376 is an abundant number, since it is smaller than the sum of its proper divisors (106970004480).

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

50138981376 is a wasteful number, since it uses less digits than its factorization.

50138981376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2169 (or 2151 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 51.

The spelling of 50138981376 in words is "fifty billion, one hundred thirty-eight million, nine hundred eighty-one thousand, three hundred seventy-six".