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20485760763 = 3134377315803
BaseRepresentation
bin10011000101000010…
…111110011011111011
31221212200120110202010
4103011002332123323
5313423323321023
613224440541003
71323441044016
oct230502763373
957780513663
1020485760763
1187627502a6
123b78781763
131c16215740
14dc4a1237d
157ed720093
hex4c50be6fb

20485760763 has 32 divisors (see below), whose sum is σ = 30140377344. Its totient is φ = 12296737152.

The previous prime is 20485760749. The next prime is 20485760809. The reversal of 20485760763 is 36706758402.

It is not a de Polignac number, because 20485760763 - 213 = 20485752571 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (20485760063) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1288420 + ... + 1304222.

It is an arithmetic number, because the mean of its divisors is an integer number (941886792).

Almost surely, 220485760763 is an apocalyptic number.

20485760763 is a deficient number, since it is larger than the sum of its proper divisors (9654616581).

20485760763 is a wasteful number, since it uses less digits than its factorization.

20485760763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16635.

The product of its (nonzero) digits is 1693440, while the sum is 48.

The spelling of 20485760763 in words is "twenty billion, four hundred eighty-five million, seven hundred sixty thousand, seven hundred sixty-three".

Divisors: 1 3 13 39 43 129 559 773 1677 2319 10049 15803 30147 33239 47409 99717 205439 432107 616317 679529 1296321 2038587 8833877 12215719 26501631 36647157 158804347 476413041 525275917 1575827751 6828586921 20485760763