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12447068214291 = 315764693408497
BaseRepresentation
bin1011010100100000111100…
…0101000101010000010011
31122001221001120210111111020
42311020033011011100103
53112413043430324131
642250034301250523
72423161645102044
oct265101705052023
948057046714436
1012447068214291
113a69854570257
1214903a9b63a43
136c39a457b1a9
14310626d848cb
15168b9bae1996
hexb520f145413

12447068214291 has 16 divisors (see below), whose sum is σ = 16702097594784. Its totient is φ = 8245044048384.

The previous prime is 12447068214289. The next prime is 12447068214419. The reversal of 12447068214291 is 19241286074421.

It is a happy number.

It is not a de Polignac number, because 12447068214291 - 21 = 12447068214289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12447068219291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30266155 + ... + 30674651.

It is an arithmetic number, because the mean of its divisors is an integer number (1043881099674).

Almost surely, 212447068214291 is an apocalyptic number.

12447068214291 is a deficient number, since it is larger than the sum of its proper divisors (4255029380493).

12447068214291 is a wasteful number, since it uses less digits than its factorization.

12447068214291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473350.

The product of its (nonzero) digits is 1548288, while the sum is 51.

The spelling of 12447068214291 in words is "twelve trillion, four hundred forty-seven billion, sixty-eight million, two hundred fourteen thousand, two hundred ninety-one".

Divisors: 1 3 157 471 64693 194079 408497 1225491 10156801 30470403 64134029 192402087 26426896421 79280689263 4149022738097 12447068214291