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188663767953049 = 7921738672
BaseRepresentation
bin101010111001011010110100…
…110111101110111010011001
3220202000002011101001122220001
4222321122310313232322121
5144212031344043444144
61505130534414133001
754511336021641544
oct5271326467567231
9822002141048801
10188663767953049
1155128944611a94
12191b03761b1161
138136bbc7b04bc
14348353736b85b
1516c289e429bd4
hexab96b4deee99

188663767953049 has 9 divisors (see below), whose sum is σ = 191083245667797. Its totient is φ = 186274547623164.

The previous prime is 188663767952977. The next prime is 188663767953071. The reversal of 188663767953049 is 940359767366881.

It is a happy number.

The square root of 188663767953049 is 13735493.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 188663767953049 - 225 = 188663734398617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (188663767953079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1085017014 + ... + 1085190880.

Almost surely, 2188663767953049 is an apocalyptic number.

188663767953049 is the 13735493-rd square number.

188663767953049 is the 6867747-th centered octagonal number.

It is an amenable number.

188663767953049 is a deficient number, since it is larger than the sum of its proper divisors (2419477714748).

188663767953049 is an frugal number, since it uses more digits than its factorization.

188663767953049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347892 (or 173946 counting only the distinct ones).

The product of its (nonzero) digits is 9876142080, while the sum is 82.

The spelling of 188663767953049 in words is "one hundred eighty-eight trillion, six hundred sixty-three billion, seven hundred sixty-seven million, nine hundred fifty-three thousand, forty-nine".

Divisors: 1 79 6241 173867 13735493 1085103947 30229733689 2388148961431 188663767953049