11661066605052 has 36 divisors (see below), whose sum is σ = 29762765476080. Its totient is φ = 3849284120832.

The previous prime is 11661066605051. The next prime is 11661066605113. The reversal of 11661066605052 is 25050666016611.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 11661066604989 and 11661066605007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11661066605051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1572416277 + ... + 1572423692.

Almost surely, 2^{11661066605052} is an apocalyptic number.

11661066605052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11661066605052 is an abundant number, since it is smaller than the sum of its proper divisors (18101698871028).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11661066605052 is a wasteful number, since it uses less digits than its factorization.

11661066605052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3144840082 (or 3144840077 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 45.

The spelling of 11661066605052 in words is "eleven trillion, six hundred sixty-one billion, sixty-six million, six hundred five thousand, fifty-two".