12001200806399 has 16 divisors (see below), whose sum is σ = 13734419112960. Its totient is φ = 10272678867360.

The previous prime is 12001200806351. The next prime is 12001200806429. The reversal of 12001200806399 is 99360800210021.

It is a de Polignac number, because none of the positive numbers 2^k-12001200806399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001200806299) 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, 23553272 + ... + 24057410.

It is an arithmetic number, because the mean of its divisors is an integer number (858401194560).

Almost surely, 2^{12001200806399} is an apocalyptic number.

12001200806399 is a deficient number, since it is larger than the sum of its proper divisors (1733218306561).

12001200806399 is an equidigital number, since it uses as much as digits as its factorization.

12001200806399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508790.

The product of its (nonzero) digits is 46656, while the sum is 41.

The spelling of 12001200806399 in words is "twelve trillion, one billion, two hundred million, eight hundred six thousand, three hundred ninety-nine".