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12604844231 = 745249831
BaseRepresentation
bin10111011110100111…
…01010100011000111
31012112110020102122122
423233103222203013
5201303320003411
65442433320155
7624234260000
oct135723524307
935473212578
1012604844231
115389119041
12253940605b
13125b568315
148780a61a7
154db8e89db
hex2ef4ea8c7

12604844231 has 10 divisors (see below), whose sum is σ = 14704779432. Its totient is φ = 10804150140.

The previous prime is 12604844179. The next prime is 12604844237. The reversal of 12604844231 is 13244840621.

It is a happy number.

It is not a de Polignac number, because 12604844231 - 218 = 12604582087 is a prime.

It is a super-2 number, since 2×126048442312 (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12604844191 and 12604844200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12604844237) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2622515 + ... + 2627316.

Almost surely, 212604844231 is an apocalyptic number.

12604844231 is a deficient number, since it is larger than the sum of its proper divisors (2099935201).

12604844231 is an frugal number, since it uses more digits than its factorization.

12604844231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5249859 (or 5249838 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 35.

The spelling of 12604844231 in words is "twelve billion, six hundred four million, eight hundred forty-four thousand, two hundred thirty-one".

Divisors: 1 7 49 343 2401 5249831 36748817 257241719 1800692033 12604844231