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50386838505 = 3513125642157
BaseRepresentation
bin101110111011010010…
…100010001111101001
311211001112201121021220
4232323102202033221
51311143012313010
635051500452253
73432430026543
oct567322421751
9154045647256
1050386838505
111a4070695a3
12992254a089
13499cc53753
14261dc6a693
15149d808970
hexbbb4a23e9

50386838505 has 16 divisors (see below), whose sum is σ = 81234356544. Its totient is φ = 26667842240.

The previous prime is 50386838503. The next prime is 50386838519. The reversal of 50386838505 is 50583868305.

It is not a de Polignac number, because 50386838505 - 21 = 50386838503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (50386838501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12819114 + ... + 12823043.

It is an arithmetic number, because the mean of its divisors is an integer number (5077147284).

Almost surely, 250386838505 is an apocalyptic number.

It is an amenable number.

50386838505 is a deficient number, since it is larger than the sum of its proper divisors (30847518039).

50386838505 is a wasteful number, since it uses less digits than its factorization.

50386838505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25642296.

The product of its (nonzero) digits is 3456000, while the sum is 51.

The spelling of 50386838505 in words is "fifty billion, three hundred eighty-six million, eight hundred thirty-eight thousand, five hundred five".

Divisors: 1 3 5 15 131 393 655 1965 25642157 76926471 128210785 384632355 3359122567 10077367701 16795612835 50386838505