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50691290830 = 2531163520293
BaseRepresentation
bin101111001101011011…
…111011011011001110
311211211202121101100221
4233031123323123032
51312303432301310
635142014141554
73443114601625
oct571533733316
9154752541327
1050691290830
111a552a04094
1299a84b18ba
134a1b04cc5b
14264c47c6bc
1514ba3e6ada
hexbcd6fb6ce

50691290830 has 16 divisors (see below), whose sum is σ = 94187689344. Its totient is φ = 19622435040.

The previous prime is 50691290813. The next prime is 50691290833. The reversal of 50691290830 is 3809219605.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50691290833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81759837 + ... + 81760456.

It is an arithmetic number, because the mean of its divisors is an integer number (5886730584).

Almost surely, 250691290830 is an apocalyptic number.

50691290830 is a deficient number, since it is larger than the sum of its proper divisors (43496398514).

50691290830 is a wasteful number, since it uses less digits than its factorization.

50691290830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163520331.

The product of its (nonzero) digits is 116640, while the sum is 43.

The spelling of 50691290830 in words is "fifty billion, six hundred ninety-one million, two hundred ninety thousand, eight hundred thirty".

Divisors: 1 2 5 10 31 62 155 310 163520293 327040586 817601465 1635202930 5069129083 10138258166 25345645415 50691290830