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13291158472 = 237374330631
BaseRepresentation
bin11000110000011011…
…01111101111001000
31021022021122210210121
430120031233233020
5204210014032342
610034511353024
7650236661104
oct143015575710
937267583717
1013291158472
115700570099
1226ab222774
13133a7c5317
149012ba904
1552bcb6067
hex31836fbc8

13291158472 has 32 divisors (see below), whose sum is σ = 25297130880. Its totient is φ = 6545508480.

The previous prime is 13291158469. The next prime is 13291158473. The reversal of 13291158472 is 27485119231.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (13291158473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 418597 + ... + 449227.

It is an arithmetic number, because the mean of its divisors is an integer number (790535340).

Almost surely, 213291158472 is an apocalyptic number.

It is an amenable number.

13291158472 is a deficient number, since it is larger than the sum of its proper divisors (12005972408).

13291158472 is a wasteful number, since it uses less digits than its factorization.

13291158472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31453 (or 31449 counting only the distinct ones).

The product of its digits is 120960, while the sum is 43.

The spelling of 13291158472 in words is "thirteen billion, two hundred ninety-one million, one hundred fifty-eight thousand, four hundred seventy-two".

Divisors: 1 2 4 8 73 146 292 584 743 1486 2972 5944 30631 54239 61262 108478 122524 216956 245048 433912 2236063 4472126 8944252 17888504 22758833 45517666 91035332 182070664 1661394809 3322789618 6645579236 13291158472