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12631453613 = 139175351839
BaseRepresentation
bin10111100001110010…
…01010111110101101
31012121022022022212022
423300321022332231
5201332123003423
65445223515525
7625006404242
oct136071127655
935538268768
1012631453613
1153a2143069
1225462b8ba5
131263c23c0c
1487b8315c9
154dde02dc8
hex2f0e4afad

12631453613 has 8 divisors (see below), whose sum is σ = 12729830400. Its totient is φ = 12533184288.

The previous prime is 12631453609. The next prime is 12631453621. The reversal of 12631453613 is 31635413621.

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

It is a cyclic number.

It is not a de Polignac number, because 12631453613 - 22 = 12631453609 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12631453633) 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, 217748 + ... + 269586.

It is an arithmetic number, because the mean of its divisors is an integer number (1591228800).

Almost surely, 212631453613 is an apocalyptic number.

It is an amenable number.

12631453613 is a deficient number, since it is larger than the sum of its proper divisors (98376787).

12631453613 is a wasteful number, since it uses less digits than its factorization.

12631453613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53731.

The product of its digits is 38880, while the sum is 35.

The spelling of 12631453613 in words is "twelve billion, six hundred thirty-one million, four hundred fifty-three thousand, six hundred thirteen".

Divisors: 1 139 1753 51839 243667 7205621 90873767 12631453613