11658788378564 has 96 divisors (see below), whose sum is σ = 21863963366784. Its totient is φ = 5420527257600.

The previous prime is 11658788378561. The next prime is 11658788378597. The reversal of 11658788378564 is 46587388785611.

It is a super-2 number, since 2×11658788378564² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11658788378561) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7165818719 + ... + 7165820345.

It is an arithmetic number, because the mean of its divisors is an integer number (227749618404).

Almost surely, 2^{11658788378564} is an apocalyptic number.

It is an amenable number.

11658788378564 is a deficient number, since it is larger than the sum of its proper divisors (10205174988220).

11658788378564 is a wasteful number, since it uses less digits than its factorization.

11658788378564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3813 (or 3811 counting only the distinct ones).

The product of its digits is 2167603200, while the sum is 77.

The spelling of 11658788378564 in words is "eleven trillion, six hundred fifty-eight billion, seven hundred eighty-eight million, three hundred seventy-eight thousand, five hundred sixty-four".