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18329900460487 = 711370164320631
BaseRepresentation
bin1000010101011110000110…
…01101001010100111000111
32101220022200021112110021021
410022233003031022213013
54400304114004213422
6102552350124532011
73601202010121330
oct412570315124707
971808607473237
1018329900460487
115927737a50020
12208055a6b1007
13a2c66b431345
14475259a47287
1521bc0957cdc7
hex10abc334a9c7

18329900460487 has 16 divisors (see below), whose sum is σ = 22859038047744. Its totient is φ = 14279179860000.

The previous prime is 18329900460407. The next prime is 18329900460541. The reversal of 18329900460487 is 78406400992381.

It is not a de Polignac number, because 18329900460487 - 27 = 18329900460359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18329900460407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31875339 + ... + 32445292.

It is an arithmetic number, because the mean of its divisors is an integer number (1428689877984).

Almost surely, 218329900460487 is an apocalyptic number.

18329900460487 is a deficient number, since it is larger than the sum of its proper divisors (4529137587257).

18329900460487 is a wasteful number, since it uses less digits than its factorization.

18329900460487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64324350.

The product of its (nonzero) digits is 20901888, while the sum is 61.

The spelling of 18329900460487 in words is "eighteen trillion, three hundred twenty-nine billion, nine hundred million, four hundred sixty thousand, four hundred eighty-seven".

Divisors: 1 7 11 77 3701 25907 40711 284977 64320631 450244417 707526941 4952688587 238050655331 1666354587317 2618557208641 18329900460487