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13161302237 = 181682710651
BaseRepresentation
bin11000100000111100…
…11000100011011101
31020222020022102112102
430100132120203131
5203423243132422
610013552214445
7644102136356
oct142036304335
936866272472
1013161302237
115644237196
12267383a425
13131992a105
148cbd56d2d
155206b5192
hex3107988dd

13161302237 has 8 divisors (see below), whose sum is σ = 13237197792. Its totient is φ = 13085442000.

The previous prime is 13161302197. The next prime is 13161302243. The reversal of 13161302237 is 73220316131.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13161302237 is a prime.

It is a super-2 number, since 2×131613022372 (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 (13161302837) 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, 1230362 + ... + 1241012.

It is an arithmetic number, because the mean of its divisors is an integer number (1654649724).

Almost surely, 213161302237 is an apocalyptic number.

It is an amenable number.

13161302237 is a deficient number, since it is larger than the sum of its proper divisors (75895555).

13161302237 is a wasteful number, since it uses less digits than its factorization.

13161302237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17659.

The product of its (nonzero) digits is 4536, while the sum is 29.

Adding to 13161302237 its reverse (73220316131), we get a palindrome (86381618368).

The spelling of 13161302237 in words is "thirteen billion, one hundred sixty-one million, three hundred two thousand, two hundred thirty-seven".

Divisors: 1 181 6827 10651 1235687 1927831 72714377 13161302237