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75404052161 = 1131636776047
BaseRepresentation
bin100011000111001101…
…1101000011011000001
321012122001000201210122
41012032123220123001
52213411414132121
654350134310025
75306403603524
oct1061633503301
9235561021718
1075404052161
1129a84692489
12127447b8315
137158c06059
143914614bbb
151e64c7b5ab
hex118e6e86c1

75404052161 has 16 divisors (see below), whose sum is σ = 76663770624. Its totient is φ = 74156269824.

The previous prime is 75404052151. The next prime is 75404052193. The reversal of 75404052161 is 16125040457.

It is a cyclic number.

It is not a de Polignac number, because 75404052161 - 218 = 75403790017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (75404052151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12466640 + ... + 12472686.

It is an arithmetic number, because the mean of its divisors is an integer number (4791485664).

Almost surely, 275404052161 is an apocalyptic number.

It is an amenable number.

75404052161 is a deficient number, since it is larger than the sum of its proper divisors (1259718463).

75404052161 is a wasteful number, since it uses less digits than its factorization.

75404052161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7000.

The product of its (nonzero) digits is 33600, while the sum is 35.

The spelling of 75404052161 in words is "seventy-five billion, four hundred four million, fifty-two thousand, one hundred sixty-one".

Divisors: 1 113 163 677 6047 18419 76501 110351 683311 985661 4093819 12469663 111379693 462601547 667292497 75404052161