11800551605 has 16 divisors (see below), whose sum is σ = 14629859328. Its totient is φ = 9128160000.

The previous prime is 11800551589. The next prime is 11800551611. The reversal of 11800551605 is 50615500811.

It is not a de Polignac number, because 11800551605 - 2⁴ = 11800551589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154460 + ... + 217850.

It is an arithmetic number, because the mean of its divisors is an integer number (914366208).

Almost surely, 2^11800551605 is an apocalyptic number.

It is an amenable number.

11800551605 is a deficient number, since it is larger than the sum of its proper divisors (2829307723).

11800551605 is a wasteful number, since it uses less digits than its factorization.

11800551605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64628.

The product of its (nonzero) digits is 6000, while the sum is 32.

The spelling of 11800551605 in words is "eleven billion, eight hundred million, five hundred fifty-one thousand, six hundred five".