11661616565062 has 16 divisors (see below), whose sum is σ = 18841289924160. Its totient is φ = 5395460294952.

The previous prime is 11661616565059. The next prime is 11661616565069. The reversal of 11661616565062 is 26056561616611.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11661616565069) 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, 3568424488 + ... + 3568427755.

It is an arithmetic number, because the mean of its divisors is an integer number (1177580620260).

Almost surely, 2^{11661616565062} is an apocalyptic number.

11661616565062 is a deficient number, since it is larger than the sum of its proper divisors (7179673359098).

11661616565062 is a wasteful number, since it uses less digits than its factorization.

11661616565062 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7136852307.

The product of its (nonzero) digits is 2332800, while the sum is 52.

The spelling of 11661616565062 in words is "eleven trillion, six hundred sixty-one billion, six hundred sixteen million, five hundred sixty-five thousand, sixty-two".