11605549998406 has 16 divisors (see below), whose sum is σ = 21425630766624. Its totient is φ = 4591206592704.

The previous prime is 11605549998389. The next prime is 11605549998433. The reversal of 11605549998406 is 60489994550611.

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 7 ways as a sum of consecutive naturals, for example, 31883378935 + ... + 31883379298.

It is an arithmetic number, because the mean of its divisors is an integer number (1339101922914).

Almost surely, 2^{11605549998406} is an apocalyptic number.

11605549998406 is a deficient number, since it is larger than the sum of its proper divisors (9820080768218).

11605549998406 is a wasteful number, since it uses less digits than its factorization.

11605549998406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63766758255.

The product of its (nonzero) digits is 83980800, while the sum is 67.

The spelling of 11605549998406 in words is "eleven trillion, six hundred five billion, five hundred forty-nine million, nine hundred ninety-eight thousand, four hundred six".