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2153161266252 = 223541331663781
BaseRepresentation
bin11111010101010010011…
…010011001010001001100
321121211200111210022212220
4133111102122121101030
5240234133241010002
64325052034255340
7311363225534013
oct37252232312114
97554614708786
102153161266252
11760172447077
122a9369427550
13128071a3cc79
14762dc025a7a
153b01e3a87bc
hex1f55269944c

2153161266252 has 24 divisors (see below), whose sum is σ = 5033329555632. Its totient is φ = 716393764800.

The previous prime is 2153161266229. The next prime is 2153161266259. The reversal of 2153161266252 is 2526621613512.

It is a super-2 number, since 2×21531612662522 (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2153161266259) 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, 165825399 + ... + 165838382.

It is an arithmetic number, because the mean of its divisors is an integer number (209722064818).

Almost surely, 22153161266252 is an apocalyptic number.

It is an amenable number.

2153161266252 is an abundant number, since it is smaller than the sum of its proper divisors (2880168289380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2153161266252 is a wasteful number, since it uses less digits than its factorization.

2153161266252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331664329 (or 331664327 counting only the distinct ones).

The product of its digits is 259200, while the sum is 42.

Adding to 2153161266252 its reverse (2526621613512), we get a palindrome (4679782879764).

The spelling of 2153161266252 in words is "two trillion, one hundred fifty-three billion, one hundred sixty-one million, two hundred sixty-six thousand, two hundred fifty-two".

Divisors: 1 2 3 4 6 12 541 1082 1623 2164 3246 6492 331663781 663327562 994991343 1326655124 1989982686 3979965372 179430105521 358860211042 538290316563 717720422084 1076580633126 2153161266252