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2069259985 = 513129124659
BaseRepresentation
bin111101101010110…
…0110011011010001
312100012200022001201
41323111212123101
513214212304420
6541155231201
7102164263642
oct17325463321
95305608051
102069259985
11972052721
12498ba8501
1326c9170c0
14158b676c9
15c19e410a
hex7b5666d1

2069259985 has 16 divisors (see below), whose sum is σ = 2676300480. Its totient is φ = 1526823360.

The previous prime is 2069259979. The next prime is 2069259989. The reversal of 2069259985 is 5899529602.

It is not a de Polignac number, because 2069259985 - 25 = 2069259953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2069259989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71586 + ... + 96244.

It is an arithmetic number, because the mean of its divisors is an integer number (167268780).

Almost surely, 22069259985 is an apocalyptic number.

It is an amenable number.

2069259985 is a deficient number, since it is larger than the sum of its proper divisors (607040495).

2069259985 is a wasteful number, since it uses less digits than its factorization.

2069259985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25968.

The product of its (nonzero) digits is 3499200, while the sum is 55.

The square root of 2069259985 is about 45489.1194133278. The cubic root of 2069259985 is about 1274.3000099749.

The spelling of 2069259985 in words is "two billion, sixty-nine million, two hundred fifty-nine thousand, nine hundred eighty-five".

Divisors: 1 5 13 65 1291 6455 16783 24659 83915 123295 320567 1602835 31834769 159173845 413851997 2069259985