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537561025420 = 22527199181001
BaseRepresentation
bin1111101001010010010…
…00100100101110001100
31220101112112220111121011
413310221020210232030
532301411110303140
61050541354215004
753560156216156
oct7645110445614
91811475814534
10537561025420
11197a84203871
1288224124464
133b8cbb197c3
141c037907ad6
15deb3445cea
hex7d29224b8c

537561025420 has 24 divisors (see below), whose sum is σ = 1133043766848. Its totient is φ = 214230960000.

The previous prime is 537561025411. The next prime is 537561025423. The reversal of 537561025420 is 24520165735.

It is not an unprimeable number, because it can be changed into a prime (537561025423) 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, 49585081 + ... + 49595920.

It is an arithmetic number, because the mean of its divisors is an integer number (47210156952).

Almost surely, 2537561025420 is an apocalyptic number.

It is an amenable number.

537561025420 is an abundant number, since it is smaller than the sum of its proper divisors (595482741428).

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

537561025420 is a wasteful number, since it uses less digits than its factorization.

537561025420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99181281 (or 99181279 counting only the distinct ones).

The product of its (nonzero) digits is 252000, while the sum is 40.

The spelling of 537561025420 in words is "five hundred thirty-seven billion, five hundred sixty-one million, twenty-five thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 271 542 1084 1355 2710 5420 99181001 198362002 396724004 495905005 991810010 1983620020 26878051271 53756102542 107512205084 134390256355 268780512710 537561025420