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20000150309 = 31645166139
BaseRepresentation
bin10010101000000110…
…100001001100100101
31220121211210220102202
4102220012201030211
5311430014302214
613104332344245
71305423321056
oct225006411445
956554726382
1020000150309
118533621a47
123a62015085
131b6972b189
14d7a32472d
157c0c9a6de
hex4a81a1325

20000150309 has 4 divisors (see below), whose sum is σ = 20645316480. Its totient is φ = 19354984140.

The previous prime is 20000150297. The next prime is 20000150431. The reversal of 20000150309 is 90305100002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-20000150309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000050309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 322583039 + ... + 322583100.

It is an arithmetic number, because the mean of its divisors is an integer number (5161329120).

Almost surely, 220000150309 is an apocalyptic number.

It is an amenable number.

20000150309 is a deficient number, since it is larger than the sum of its proper divisors (645166171).

20000150309 is an equidigital number, since it uses as much as digits as its factorization.

20000150309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645166170.

The product of its (nonzero) digits is 270, while the sum is 20.

The spelling of 20000150309 in words is "twenty billion, one hundred fifty thousand, three hundred nine".

Divisors: 1 31 645166139 20000150309