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12663762890 = 251266376289
BaseRepresentation
bin10111100101101000…
…11010111111001010
31012200120002210212012
423302310122333022
5201413410403030
65452340215522
7625551131342
oct136264327712
935616083765
1012663762890
115409400549
12255509a5a2
13126a82702c
14881c41d22
154e1b86095
hex2f2d1afca

12663762890 has 8 divisors (see below), whose sum is σ = 22794773220. Its totient is φ = 5065505152.

The previous prime is 12663762889. The next prime is 12663762907. The reversal of 12663762890 is 9826736621.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11581418689 + 1082344201 = 107617^2 + 32899^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 633188135 + ... + 633188154.

Almost surely, 212663762890 is an apocalyptic number.

12663762890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12663762890 is a deficient number, since it is larger than the sum of its proper divisors (10131010330).

12663762890 is a wasteful number, since it uses less digits than its factorization.

12663762890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1266376296.

The product of its (nonzero) digits is 1306368, while the sum is 50.

The spelling of 12663762890 in words is "twelve billion, six hundred sixty-three million, seven hundred sixty-two thousand, eight hundred ninety".

Divisors: 1 2 5 10 1266376289 2532752578 6331881445 12663762890