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118508975893 = 7111790533977
BaseRepresentation
bin110111001011110101…
…1110111011100010101
3102022220002112201221101
41232113223313130111
53420201244212033
6130235310350101
711363522450230
oct1562753673425
9368802481841
10118508975893
11462942556a0
121ab744bb331
13b238318799
145a432dc417
15313913097d
hex1b97af7715

118508975893 has 16 divisors (see below), whose sum is σ = 156442713984. Its totient is φ = 86912616960.

The previous prime is 118508975891. The next prime is 118508975951. The reversal of 118508975893 is 398579805811.

It is a happy number.

It is not a de Polignac number, because 118508975893 - 21 = 118508975891 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 (118508975891) 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, 45265680 + ... + 45268297.

It is an arithmetic number, because the mean of its divisors is an integer number (9777669624).

Almost surely, 2118508975893 is an apocalyptic number.

It is an amenable number.

118508975893 is a deficient number, since it is larger than the sum of its proper divisors (37933738091).

118508975893 is a wasteful number, since it uses less digits than its factorization.

118508975893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90534012.

The product of its (nonzero) digits is 21772800, while the sum is 64.

The spelling of 118508975893 in words is "one hundred eighteen billion, five hundred eight million, nine hundred seventy-five thousand, eight hundred ninety-three".

Divisors: 1 7 11 17 77 119 187 1309 90533977 633737839 995873747 1539077609 6971116229 10773543263 16929853699 118508975893