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42019660613 = 73127877937
BaseRepresentation
bin100111001000100100…
…010010001101000101
311000110102101221000102
4213020210102031011
51142024013114423
631145323053445
73015200136110
oct471044221505
9130412357012
1042019660613
1116903003a47
128188371285
133c68621708
142068903577
15115de7ec28
hex9c8912345

42019660613 has 24 divisors (see below), whose sum is σ = 49690863936. Its totient is φ = 34806343680.

The previous prime is 42019660591. The next prime is 42019660783. The reversal of 42019660613 is 31606691024.

It is not a de Polignac number, because 42019660613 - 28 = 42019660357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42019662613) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5290181 + ... + 5298117.

It is an arithmetic number, because the mean of its divisors is an integer number (2070452664).

Almost surely, 242019660613 is an apocalyptic number.

It is an amenable number.

42019660613 is a deficient number, since it is larger than the sum of its proper divisors (7671203323).

42019660613 is an equidigital number, since it uses as much as digits as its factorization.

42019660613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8793 (or 8762 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 38.

The spelling of 42019660613 in words is "forty-two billion, nineteen million, six hundred sixty thousand, six hundred thirteen".

Divisors: 1 7 31 217 787 961 5509 6727 7937 24397 55559 170779 246047 756307 1722329 5294149 6246419 7627457 43724933 53392199 193638989 1355472923 6002808659 42019660613