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159438187468 = 2275694220981
BaseRepresentation
bin1001010001111101000…
…0011010101111001100
3120020112112002010002101
42110133100122233030
510103012133444333
6201124521404444
714343012142540
oct2243720325714
9506475063071
10159438187468
116168777808a
1226a97639724
131205ba51881
147a0706ba20
1542324b467d
hex251f41abcc

159438187468 has 12 divisors (see below), whose sum is σ = 318876374992. Its totient is φ = 68330651760.

The previous prime is 159438187463. The next prime is 159438187471. The reversal of 159438187468 is 864781834951.

159438187468 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

159438187468 is an admirable number.

It is a super-2 number, since 2×1594381874682 (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (159438187463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2847110463 + ... + 2847110518.

Almost surely, 2159438187468 is an apocalyptic number.

It is an amenable number.

159438187468 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

159438187468 is a wasteful number, since it uses less digits than its factorization.

159438187468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5694220992 (or 5694220990 counting only the distinct ones).

The product of its digits is 46448640, while the sum is 64.

The spelling of 159438187468 in words is "one hundred fifty-nine billion, four hundred thirty-eight million, one hundred eighty-seven thousand, four hundred sixty-eight".

Divisors: 1 2 4 7 14 28 5694220981 11388441962 22776883924 39859546867 79719093734 159438187468