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53015023191 = 3139413144413
BaseRepresentation
bin110001010111111100…
…010000111001010111
312001211201010012220110
4301113330100321113
51332033321220231
640204343534103
73554522155554
oct612774207127
9161751105813
1053015023191
1120535664659
12a33675a333
134ccb5b4310
1427ccd27a2b
1515a4405046
hexc57f10e57

53015023191 has 16 divisors (see below), whose sum is σ = 76132750176. Its totient is φ = 32620937856.

The previous prime is 53015023151. The next prime is 53015023211. The reversal of 53015023191 is 19132051035.

It is not a de Polignac number, because 53015023191 - 221 = 53012926039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53015023151) 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, 294901 + ... + 439313.

It is an arithmetic number, because the mean of its divisors is an integer number (4758296886).

Almost surely, 253015023191 is an apocalyptic number.

53015023191 is a deficient number, since it is larger than the sum of its proper divisors (23117726985).

53015023191 is a wasteful number, since it uses less digits than its factorization.

53015023191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153842.

The product of its (nonzero) digits is 4050, while the sum is 30.

The spelling of 53015023191 in words is "fifty-three billion, fifteen million, twenty-three thousand, one hundred ninety-one".

Divisors: 1 3 13 39 9413 28239 122369 144413 367107 433239 1877369 5632107 1359359569 4078078707 17671674397 53015023191