11009943685605 has 64 divisors (see below), whose sum is σ = 18584174407680. Its totient is φ = 5550590707200.

The previous prime is 11009943685603. The next prime is 11009943685607. The reversal of 11009943685605 is 50658634990011.

It is an interprime number because it is at equal distance from previous prime (11009943685603) and next prime (11009943685607).

It is not a de Polignac number, because 11009943685605 - 2¹ = 11009943685603 is a prime.

It is a super-2 number, since 2×11009943685605² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11009943685603) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1191418785 + ... + 1191428025.

It is an arithmetic number, because the mean of its divisors is an integer number (290377725120).

Almost surely, 2^{11009943685605} is an apocalyptic number.

11009943685605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11009943685605 is a deficient number, since it is larger than the sum of its proper divisors (7574230722075).

11009943685605 is a wasteful number, since it uses less digits than its factorization.

11009943685605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18082.

The product of its (nonzero) digits is 6998400, while the sum is 57.

The spelling of 11009943685605 in words is "eleven trillion, nine billion, nine hundred forty-three million, six hundred eighty-five thousand, six hundred five".