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12688372653 = 3111920236639
BaseRepresentation
bin10111101000100100…
…10011001110101101
31012202021102010002220
423310102103032231
5201441210411103
65455015505553
7626300250045
oct136422231655
935667363086
1012688372653
11542128a1a0
1225613882b9
131272962718
1488520a725
154e3de7c53
hex2f44933ad

12688372653 has 16 divisors (see below), whose sum is σ = 19427174400. Its totient is φ = 7285189680.

The previous prime is 12688372607. The next prime is 12688372663. The reversal of 12688372653 is 35627388621.

It is a happy number.

It is not a de Polignac number, because 12688372653 - 217 = 12688241581 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12688372596 and 12688372605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12688372663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10117693 + ... + 10118946.

It is an arithmetic number, because the mean of its divisors is an integer number (1214198400).

Almost surely, 212688372653 is an apocalyptic number.

It is an amenable number.

12688372653 is a deficient number, since it is larger than the sum of its proper divisors (6738801747).

12688372653 is a wasteful number, since it uses less digits than its factorization.

12688372653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20236672.

The product of its digits is 2903040, while the sum is 51.

The spelling of 12688372653 in words is "twelve billion, six hundred eighty-eight million, three hundred seventy-two thousand, six hundred fifty-three".

Divisors: 1 3 11 19 33 57 209 627 20236639 60709917 222603029 384496141 667809087 1153488423 4229457551 12688372653