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1818086706331 = 71773209288213
BaseRepresentation
bin11010011101001110011…
…010011000110010011011
320102210210120220001012221
4122131032122120302123
5214241420144100311
63511114551444511
7245231612010220
oct32351632306233
96383716801187
101818086706331
11641056603875
12254435686737
131025a24134bc
1463dd2929947
153245c83c671
hex1a74e698c9b

1818086706331 has 16 divisors (see below), whose sum is σ = 2230175208384. Its totient is φ = 1446600121344.

The previous prime is 1818086706329. The next prime is 1818086706343. The reversal of 1818086706331 is 1336076808181.

It is not a de Polignac number, because 1818086706331 - 21 = 1818086706329 is a prime.

It is a super-2 number, since 2×18180867063312 (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1818086706391) 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, 104635420 + ... + 104652793.

It is an arithmetic number, because the mean of its divisors is an integer number (139385950524).

Almost surely, 21818086706331 is an apocalyptic number.

1818086706331 is a deficient number, since it is larger than the sum of its proper divisors (412088502053).

1818086706331 is a wasteful number, since it uses less digits than its factorization.

1818086706331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209288310.

The product of its (nonzero) digits is 1161216, while the sum is 52.

The spelling of 1818086706331 in words is "one trillion, eight hundred eighteen billion, eighty-six million, seven hundred six thousand, three hundred thirty-one".

Divisors: 1 7 17 73 119 511 1241 8687 209288213 1465017491 3557899621 15278039549 24905297347 106946276843 259726672333 1818086706331