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538857729111 = 31365920966411
BaseRepresentation
bin1111101011101100110…
…11000110110001010111
31220111212220212212122210
413311312123012301113
532312040034312421
61051314155124503
753634253060332
oct7656633066127
91814786785583
10538857729111
1119858a15a509
1288526443733
133ba7766c2b0
141c11bc0b619
15e03c1d4576
hex7d766c6c57

538857729111 has 16 divisors (see below), whose sum is σ = 774918587520. Its totient is φ = 331101546720.

The previous prime is 538857729107. The next prime is 538857729139. The reversal of 538857729111 is 111927758835.

It is not a de Polignac number, because 538857729111 - 22 = 538857729107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538857729161) 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, 10457505 + ... + 10508906.

It is an arithmetic number, because the mean of its divisors is an integer number (48432411720).

Almost surely, 2538857729111 is an apocalyptic number.

538857729111 is a deficient number, since it is larger than the sum of its proper divisors (236060858409).

538857729111 is a wasteful number, since it uses less digits than its factorization.

538857729111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20967086.

The product of its digits is 4233600, while the sum is 57.

The spelling of 538857729111 in words is "five hundred thirty-eight billion, eight hundred fifty-seven million, seven hundred twenty-nine thousand, one hundred eleven".

Divisors: 1 3 13 39 659 1977 8567 25701 20966411 62899233 272563343 817690029 13816864849 41450594547 179619243037 538857729111