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83123738607988 = 22131598533434769
BaseRepresentation
bin10010111001100111000000…
…111010011000000101110100
3101220022112220021010212121001
4102321213000322120011310
541343344404040423423
6452442303543533044
723336330506153531
oct2271470072300564
9356275807125531
1083123738607988
112453864145a501
1293a5b2ba5a184
13374c6c529a150
1416752d3543d88
1599238c473cad
hex4b99c0e98174

83123738607988 has 12 divisors (see below), whose sum is σ = 156656276607460. Its totient is φ = 38364802434432.

The previous prime is 83123738607961. The next prime is 83123738608037. The reversal of 83123738607988 is 88970683732138.

It can be written as a sum of positive squares in 2 ways, for example, as 31539770496784 + 51583968111204 = 5616028^2 + 7182198^2 .

It is a super-2 number, since 2×831237386079882 (a number of 29 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (73) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 83123738607988.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 799266717333 + ... + 799266717436.

Almost surely, 283123738607988 is an apocalyptic number.

It is an amenable number.

83123738607988 is a deficient number, since it is larger than the sum of its proper divisors (73532537999472).

83123738607988 is a wasteful number, since it uses less digits than its factorization.

83123738607988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1598533434786 (or 1598533434784 counting only the distinct ones).

The product of its (nonzero) digits is 585252864, while the sum is 73.

The spelling of 83123738607988 in words is "eighty-three trillion, one hundred twenty-three billion, seven hundred thirty-eight million, six hundred seven thousand, nine hundred eighty-eight".

Divisors: 1 2 4 13 26 52 1598533434769 3197066869538 6394133739076 20780934651997 41561869303994 83123738607988