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131488536378 = 2323952815481
BaseRepresentation
bin111101001110101010…
…0111101011100111010
3110120101122212201122210
41322131110331130322
54123242031131003
6140223251355550
712333260055363
oct1723524753472
9416348781583
10131488536378
115084493a591
12215972b2bb6
13c5263b1ca4
146515066b6a
153648896503
hex1e9d53d73a

131488536378 has 16 divisors (see below), whose sum is σ = 274410858816. Its totient is φ = 41923881120.

The previous prime is 131488536353. The next prime is 131488536383. The reversal of 131488536378 is 873635884131.

It is a super-3 number, since 3×1314885363783 (a number of 34 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 476407603 + ... + 476407878.

It is an arithmetic number, because the mean of its divisors is an integer number (17150678676).

Almost surely, 2131488536378 is an apocalyptic number.

131488536378 is an abundant number, since it is smaller than the sum of its proper divisors (142922322438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131488536378 is a wasteful number, since it uses less digits than its factorization.

131488536378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 952815509.

The product of its digits is 11612160, while the sum is 57.

The spelling of 131488536378 in words is "one hundred thirty-one billion, four hundred eighty-eight million, five hundred thirty-six thousand, three hundred seventy-eight".

Divisors: 1 2 3 6 23 46 69 138 952815481 1905630962 2858446443 5716892886 21914756063 43829512126 65744268189 131488536378