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12625026388891 = 77913922789967
BaseRepresentation
bin1011011110110111111000…
…1101101001001110011011
31122200221101210111102211221
42313231332031221032123
53123322023223421031
642503505042432511
72442061631450320
oct267557615511633
948627353442757
1012625026388891
114028275298824
1214ba993962737
137076c5192a17
143190a9918b47
1516d614e24a11
hexb7b7e36939b

12625026388891 has 8 divisors (see below), whose sum is σ = 14428784540160. Its totient is φ = 10821313975848.

The previous prime is 12625026388889. The next prime is 12625026388907. The reversal of 12625026388891 is 19888362052621.

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 12625026388891 - 21 = 12625026388889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12625026383891) 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, 10841011 + ... + 11948956.

It is an arithmetic number, because the mean of its divisors is an integer number (1803598067520).

Almost surely, 212625026388891 is an apocalyptic number.

12625026388891 is a deficient number, since it is larger than the sum of its proper divisors (1803758151269).

12625026388891 is an equidigital number, since it uses as much as digits as its factorization.

12625026388891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22869113.

The product of its (nonzero) digits is 19906560, while the sum is 61.

The spelling of 12625026388891 in words is "twelve trillion, six hundred twenty-five billion, twenty-six million, three hundred eighty-eight thousand, eight hundred ninety-one".

Divisors: 1 7 79139 553973 22789967 159529769 1803575198413 12625026388891