11115666151540 has 48 divisors (see below), whose sum is σ = 23363653255488. Its totient is φ = 4442314033664.

The previous prime is 11115666151517. The next prime is 11115666151543. The reversal of 11115666151540 is 4515166651111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11115666151543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 316190604 + ... + 316225756.

It is an arithmetic number, because the mean of its divisors is an integer number (486742776156).

Almost surely, 2^{11115666151540} is an apocalyptic number.

11115666151540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11115666151540 is an abundant number, since it is smaller than the sum of its proper divisors (12247987103948).

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

11115666151540 is a wasteful number, since it uses less digits than its factorization.

11115666151540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48768 (or 48766 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 43.

The spelling of 11115666151540 in words is "eleven trillion, one hundred fifteen billion, six hundred sixty-six million, one hundred fifty-one thousand, five hundred forty".