11662005540 has 48 divisors (see below), whose sum is σ = 32658329088. Its totient is φ = 3109419264.

The previous prime is 11662005527. The next prime is 11662005541. The reversal of 11662005540 is 4550026611.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 11662005498 and 11662005507.

It is not an unprimeable number, because it can be changed into a prime (11662005541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 740589 + ... + 756171.

It is an arithmetic number, because the mean of its divisors is an integer number (680381856).

Almost surely, 2^11662005540 is an apocalyptic number.

11662005540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11662005540 is an abundant number, since it is smaller than the sum of its proper divisors (20996323548).

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

11662005540 is a wasteful number, since it uses less digits than its factorization.

11662005540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28068 (or 28066 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The spelling of 11662005540 in words is "eleven billion, six hundred sixty-two million, five thousand, five hundred forty".