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14978070905 = 571939672293
BaseRepresentation
bin11011111001100001…
…10011100101111001
31102122211212211121212
431330300303211321
5221133341232110
610514132012505
71040112334130
oct157460634571
942584784555
1014978070905
1163968043a6
122aa0161135
13154913b865
14a21356917
155c9e31e05
hex37cc33979

14978070905 has 32 divisors (see below), whose sum is σ = 20678152704. Its totient is φ = 10202443776.

The previous prime is 14978070901. The next prime is 14978070907. The reversal of 14978070905 is 50907087941.

It is not a de Polignac number, because 14978070905 - 22 = 14978070901 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14978070901) 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, 6530939 + ... + 6533231.

It is an arithmetic number, because the mean of its divisors is an integer number (646192272).

Almost surely, 214978070905 is an apocalyptic number.

It is an amenable number.

14978070905 is a deficient number, since it is larger than the sum of its proper divisors (5700081799).

14978070905 is a wasteful number, since it uses less digits than its factorization.

14978070905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3465.

The product of its (nonzero) digits is 635040, while the sum is 50.

The spelling of 14978070905 in words is "fourteen billion, nine hundred seventy-eight million, seventy thousand, nine hundred five".

Divisors: 1 5 7 35 193 965 967 1351 2293 4835 6755 6769 11465 16051 33845 80255 186631 442549 933155 1306417 2212745 2217331 3097843 6532085 11086655 15489215 15521317 77606585 427944883 2139724415 2995614181 14978070905