11535220666045 has 12 divisors (see below), whose sum is σ = 13852011315996. Its totient is φ = 9221683423680.

The previous prime is 11535220665971. The next prime is 11535220666121. The reversal of 11535220666045 is 54066602253511.

It can be written as a sum of positive squares in 2 ways, for example, as 8451747881721 + 3083472784324 = 2907189^2 + 1755982^2 .

It is not a de Polignac number, because 11535220666045 - 2⁹ = 11535220665533 is a prime.

It is a super-2 number, since 2×11535220666045² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11535220665986 and 11535220666004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9554985 + ... + 10694305.

It is an arithmetic number, because the mean of its divisors is an integer number (1154334276333).

Almost surely, 2^{11535220666045} is an apocalyptic number.

It is an amenable number.

11535220666045 is a deficient number, since it is larger than the sum of its proper divisors (2316790649951).

11535220666045 is an frugal number, since it uses more digits than its factorization.

11535220666045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1142172 (or 1140749 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 46.

The spelling of 11535220666045 in words is "eleven trillion, five hundred thirty-five billion, two hundred twenty million, six hundred sixty-six thousand, forty-five".