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561500532161 = 10937313810673
BaseRepresentation
bin10000010101111000000…
…10100010110111000001
31222200022221022110010222
420022330002202313001
533144423114012121
61105541053032425
755365335526362
oct10127402426701
91880287273128
10561500532161
111a7149459588
12909a5485715
1340c457254ca
141d2690b7b69
15e914e880ab
hex82bc0a2dc1

561500532161 has 8 divisors (see below), whose sum is σ = 568171128360. Its totient is φ = 554857558272.

The previous prime is 561500532157. The next prime is 561500532211. The reversal of 561500532161 is 161235005165.

It can be written as a sum of positive squares in 4 ways, for example, as 205169137936 + 356331394225 = 452956^2 + 596935^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 561500532161 - 22 = 561500532157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (561500532101) 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, 6864680 + ... + 6945993.

It is an arithmetic number, because the mean of its divisors is an integer number (71021391045).

Almost surely, 2561500532161 is an apocalyptic number.

It is an amenable number.

561500532161 is a deficient number, since it is larger than the sum of its proper divisors (6670596199).

561500532161 is a wasteful number, since it uses less digits than its factorization.

561500532161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13811155.

The product of its (nonzero) digits is 27000, while the sum is 35.

The spelling of 561500532161 in words is "five hundred sixty-one billion, five hundred million, five hundred thirty-two thousand, one hundred sixty-one".

Divisors: 1 109 373 40657 13810673 1505363357 5151381029 561500532161