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80975896617 = 37111525922973
BaseRepresentation
bin100101101101010001…
…0100010000000101001
321202000100102202111010
41023122202202000221
52311314312142432
6101111054254133
75564441523150
oct1133242420051
9252010382433
1080975896617
1131383867710
121383a7b7349
137836382c35
143cc2610597
15218dedd3cc
hex12da8a2029

80975896617 has 32 divisors (see below), whose sum is σ = 134623964160. Its totient is φ = 42060813120.

The previous prime is 80975896543. The next prime is 80975896627. The reversal of 80975896617 is 71669857908.

It is not a de Polignac number, because 80975896617 - 27 = 80975896489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80975896627) 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, 3513343 + ... + 3536315.

It is an arithmetic number, because the mean of its divisors is an integer number (4206998880).

Almost surely, 280975896617 is an apocalyptic number.

It is an amenable number.

80975896617 is a deficient number, since it is larger than the sum of its proper divisors (53648067543).

80975896617 is a wasteful number, since it uses less digits than its factorization.

80975896617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38253.

The product of its (nonzero) digits is 45722880, while the sum is 66.

The spelling of 80975896617 in words is "eighty billion, nine hundred seventy-five million, eight hundred ninety-six thousand, six hundred seventeen".

Divisors: 1 3 7 11 21 33 77 231 15259 22973 45777 68919 106813 160811 167849 252703 320439 482433 503547 758109 1174943 1768921 3524829 5306763 350545007 1051635021 2453815049 3855995077 7361445147 11567985231 26991965539 80975896617