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80015894945 = 5711320231579
BaseRepresentation
bin100101010000101010…
…0011010100110100001
321122112110000121202122
41022201110122212201
52302333032114240
6100431522154025
75531603612360
oct1124124324641
9248473017678
1080015894945
1130a309831a8
12136111b2915
13771250b8cc
143c30d157d7
152134aad4b5
hex12a151a9a1

80015894945 has 16 divisors (see below), whose sum is σ = 110707205760. Its totient is φ = 54382481664.

The previous prime is 80015894927. The next prime is 80015894953. The reversal of 80015894945 is 54949851008.

It is not a de Polignac number, because 80015894945 - 210 = 80015893921 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10111835 + ... + 10119744.

It is an arithmetic number, because the mean of its divisors is an integer number (6919200360).

Almost surely, 280015894945 is an apocalyptic number.

It is an amenable number.

80015894945 is a deficient number, since it is larger than the sum of its proper divisors (30691310815).

80015894945 is a wasteful number, since it uses less digits than its factorization.

80015894945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20231704.

The product of its (nonzero) digits is 2073600, while the sum is 53.

The spelling of 80015894945 in words is "eighty billion, fifteen million, eight hundred ninety-four thousand, nine hundred forty-five".

Divisors: 1 5 7 35 113 565 791 3955 20231579 101157895 141621053 708105265 2286168427 11430842135 16003178989 80015894945