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13061173181 = 72716885173
BaseRepresentation
bin11000010101000000…
…11010111110111101
31020201020220100021212
430022200122332331
5203222130020211
610000014134205
7641445066050
oct141240327675
936636810255
1013061173181
1155a2767801
1226461b1365
131301c6c954
148bc930a97
155169d738b
hex30a81afbd

13061173181 has 8 divisors (see below), whose sum is σ = 14982138624. Its totient is φ = 11153978640.

The previous prime is 13061173171. The next prime is 13061173183. The reversal of 13061173181 is 18137116031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13061173181 - 218 = 13060911037 is a prime.

It is a super-2 number, since 2×130611731812 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13061173183) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3440690 + ... + 3444483.

It is an arithmetic number, because the mean of its divisors is an integer number (1872767328).

Almost surely, 213061173181 is an apocalyptic number.

It is an amenable number.

13061173181 is a deficient number, since it is larger than the sum of its proper divisors (1920965443).

13061173181 is an equidigital number, since it uses as much as digits as its factorization.

13061173181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6885451.

The product of its (nonzero) digits is 3024, while the sum is 32.

The spelling of 13061173181 in words is "thirteen billion, sixty-one million, one hundred seventy-three thousand, one hundred eighty-one".

Divisors: 1 7 271 1897 6885173 48196211 1865881883 13061173181