12006355860521 has 8 divisors (see below), whose sum is σ = 13104996161088. Its totient is φ = 10908907794000.

The previous prime is 12006355860509. The next prime is 12006355860523. The reversal of 12006355860521 is 12506855360021.

It is a happy number.

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 12006355860521 - 2¹⁰ = 12006355859497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12006355860523) 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, 298037450 + ... + 298077731.

It is an arithmetic number, because the mean of its divisors is an integer number (1638124520136).

Almost surely, 2^{12006355860521} is an apocalyptic number.

12006355860521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12006355860521 is a deficient number, since it is larger than the sum of its proper divisors (1098640300567).

12006355860521 is a wasteful number, since it uses less digits than its factorization.

12006355860521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596117023.

The product of its (nonzero) digits is 432000, while the sum is 44.

The spelling of 12006355860521 in words is "twelve trillion, six billion, three hundred fifty-five million, eight hundred sixty thousand, five hundred twenty-one".