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905993133069 = 38231697216233
BaseRepresentation
bin11010010111100010110…
…01100001110000001101
310012121112012220210020210
431023301121201300031
5104320433220224234
61532112453033033
7122312232365463
oct15136131416015
93177465823223
10905993133069
1131a258560432
12127707325779
13675862bc3ab
1431bc9328833
1518878759be9
hexd2f1661c0d

905993133069 has 16 divisors (see below), whose sum is σ = 1210176934272. Its totient is φ = 602903251968.

The previous prime is 905993133037. The next prime is 905993133079. The reversal of 905993133069 is 960331399509.

It is not a de Polignac number, because 905993133069 - 25 = 905993133037 is a prime.

It is a super-2 number, since 2×9059931330692 (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (905993133079) 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 15 ways as a sum of consecutive naturals, for example, 4081777 + ... + 4298009.

It is an arithmetic number, because the mean of its divisors is an integer number (75636058392).

Almost surely, 2905993133069 is an apocalyptic number.

It is an amenable number.

905993133069 is a deficient number, since it is larger than the sum of its proper divisors (304183801203).

905993133069 is a wasteful number, since it uses less digits than its factorization.

905993133069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218756.

The product of its (nonzero) digits is 5314410, while the sum is 57.

The spelling of 905993133069 in words is "nine hundred five billion, nine hundred ninety-three million, one hundred thirty-three thousand, sixty-nine".

Divisors: 1 3 823 1697 2469 5091 216233 648699 1396631 4189893 177959759 366947401 533879277 1100842203 301997711023 905993133069