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80345368954 = 2173397584917
BaseRepresentation
bin100101011010011110…
…1010000100101111010
321200101101222122010201
41022310331100211322
52304021403301304
6100524332032414
75543014240114
oct1126475204572
9250341878121
1080345368954
113108a958974
12136a360270a
137765859146
143c6299c3b4
1521539903a4
hex12b4f5097a

80345368954 has 16 divisors (see below), whose sum is σ = 121520224008. Its totient is φ = 39839798592.

The previous prime is 80345368949. The next prime is 80345368969. The reversal of 80345368954 is 45986354308.

It can be written as a sum of positive squares in 4 ways, for example, as 77058984025 + 3286384929 = 277595^2 + 57327^2 .

It is a junction number, because it is equal to n+sod(n) for n = 80345368895 and 80345368904.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155097 + ... + 429820.

Almost surely, 280345368954 is an apocalyptic number.

80345368954 is a deficient number, since it is larger than the sum of its proper divisors (41174855054).

80345368954 is a wasteful number, since it uses less digits than its factorization.

80345368954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585489.

The product of its (nonzero) digits is 12441600, while the sum is 55.

The spelling of 80345368954 in words is "eighty billion, three hundred forty-five million, three hundred sixty-eight thousand, nine hundred fifty-four".

Divisors: 1 2 173 346 397 794 68681 137362 584917 1169834 101190641 202381282 232212049 464424098 40172684477 80345368954