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75899538431 = 193994712549
BaseRepresentation
bin100011010101111110…
…1110000101111111111
321020220120101001011222
41012223331300233333
52220420240212211
654511234303555
75324601301103
oct1065375605777
9236816331158
1075899538431
112a209346672
1212862727bbb
13720776a7b2
143960353903
151e935021db
hex11abf70bff

75899538431 has 4 divisors (see below), whose sum is σ = 79894251000. Its totient is φ = 71904825864.

The previous prime is 75899538409. The next prime is 75899538433. The reversal of 75899538431 is 13483599857.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 75899538431 - 214 = 75899522047 is a prime.

It is a super-3 number, since 3×758995384313 (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75899538433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1997356256 + ... + 1997356293.

It is an arithmetic number, because the mean of its divisors is an integer number (19973562750).

Almost surely, 275899538431 is an apocalyptic number.

75899538431 is a deficient number, since it is larger than the sum of its proper divisors (3994712569).

75899538431 is a wasteful number, since it uses less digits than its factorization.

75899538431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3994712568.

The product of its digits is 32659200, while the sum is 62.

The spelling of 75899538431 in words is "seventy-five billion, eight hundred ninety-nine million, five hundred thirty-eight thousand, four hundred thirty-one".

Divisors: 1 19 3994712549 75899538431