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55205431375237 = 11131976411953299
BaseRepresentation
bin11001000110101100001000…
…01000000111010110000101
321020110120212102122112012021
430203112010020013112011
524213441210413001422
6313225005225123141
714425314024153433
oct1443260410072605
9236416772575167
1055205431375237
1116654545899410
1262372233294b1
1324a5b081404c0
14d8bd58543d53
1565b04756bdc7
hex323584207585

55205431375237 has 16 divisors (see below), whose sum is σ = 64857091924800. Its totient is φ = 46325978006400.

The previous prime is 55205431375217. The next prime is 55205431375261. The reversal of 55205431375237 is 73257313450255.

It is a cyclic number.

It is not a de Polignac number, because 55205431375237 - 243 = 46409338353029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55205431375217) 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, 27286014 + ... + 29239312.

It is an arithmetic number, because the mean of its divisors is an integer number (4053568245300).

Almost surely, 255205431375237 is an apocalyptic number.

It is an amenable number.

55205431375237 is a deficient number, since it is larger than the sum of its proper divisors (9651660549563).

55205431375237 is a wasteful number, since it uses less digits than its factorization.

55205431375237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2150964.

The product of its (nonzero) digits is 13230000, while the sum is 52.

The spelling of 55205431375237 in words is "fifty-five trillion, two hundred five billion, four hundred thirty-one million, three hundred seventy-five thousand, two hundred thirty-seven".

Divisors: 1 11 13 143 197641 1953299 2174051 2569333 21486289 25392887 28262663 279321757 386051967659 4246571644249 5018675579567 55205431375237