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12851231270 = 251285123127
BaseRepresentation
bin10111111011111111…
…00011101000100110
31020011121212012010112
423331333203220212
5202304403400040
65523114253022
7633315443363
oct137577435046
936147765115
1012851231270
1154a5204299
1225a7a27172
13129a614377
1489cac146a
15503367365
hex2fdfe3a26

12851231270 has 8 divisors (see below), whose sum is σ = 23132216304. Its totient is φ = 5140492504.

The previous prime is 12851231231. The next prime is 12851231279. The reversal of 12851231270 is 7213215821.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12851231279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 642561554 + ... + 642561573.

It is an arithmetic number, because the mean of its divisors is an integer number (2891527038).

Almost surely, 212851231270 is an apocalyptic number.

12851231270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12851231270 is a deficient number, since it is larger than the sum of its proper divisors (10280985034).

12851231270 is a wasteful number, since it uses less digits than its factorization.

12851231270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285123134.

The product of its (nonzero) digits is 6720, while the sum is 32.

The spelling of 12851231270 in words is "twelve billion, eight hundred fifty-one million, two hundred thirty-one thousand, two hundred seventy".

Divisors: 1 2 5 10 1285123127 2570246254 6425615635 12851231270