11556200206605 has 16 divisors (see below), whose sum is σ = 18490068495360. Its totient is φ = 6163257388608.

The previous prime is 11556200206553. The next prime is 11556200206657. The reversal of 11556200206605 is 50660200265511.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11556200206553) and next prime (11556200206657).

It is not a de Polignac number, because 11556200206605 - 2¹⁶ = 11556200141069 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1111710 + ... + 4934399.

It is an arithmetic number, because the mean of its divisors is an integer number (1155629280960).

Almost surely, 2^{11556200206605} is an apocalyptic number.

11556200206605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11556200206605 is a deficient number, since it is larger than the sum of its proper divisors (6933868288755).

11556200206605 is a wasteful number, since it uses less digits than its factorization.

11556200206605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6173540.

The product of its (nonzero) digits is 108000, while the sum is 39.

The spelling of 11556200206605 in words is "eleven trillion, five hundred fifty-six billion, two hundred million, two hundred six thousand, six hundred five".