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12445745999 = 139202944129
BaseRepresentation
bin10111001011101001…
…10000001101001111
31012010100212101220112
423211310300031033
5200442102332444
65414551310235
7620263044521
oct134564601517
935110771815
1012445745999
1153073321a5
1224b407b37b
13123460215b
14860ccda11
154cc96d69e
hex2e5d3034f

12445745999 has 8 divisors (see below), whose sum is σ = 12541746000. Its totient is φ = 12349838592.

The previous prime is 12445745929. The next prime is 12445746101. The reversal of 12445745999 is 99954754421.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12445745999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12445745929) 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, 259967 + ... + 304095.

It is an arithmetic number, because the mean of its divisors is an integer number (1567718250).

Almost surely, 212445745999 is an apocalyptic number.

12445745999 is a deficient number, since it is larger than the sum of its proper divisors (96000001).

12445745999 is a wasteful number, since it uses less digits than its factorization.

12445745999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46297.

The product of its digits is 16329600, while the sum is 59.

The spelling of 12445745999 in words is "twelve billion, four hundred forty-five million, seven hundred forty-five thousand, nine hundred ninety-nine".

Divisors: 1 139 2029 44129 282031 6133931 89537741 12445745999