11540540665 has 8 divisors (see below), whose sum is σ = 13852128960. Its totient is φ = 9230112432.

The previous prime is 11540540653. The next prime is 11540540699. The reversal of 11540540665 is 56604504511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11540540665 - 2¹⁵ = 11540507897 is a prime.

It is a super-3 number, since 3×11540540665³ (a number of 31 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 267975 + ... + 308044.

It is an arithmetic number, because the mean of its divisors is an integer number (1731516120).

Almost surely, 2^11540540665 is an apocalyptic number.

It is an amenable number.

11540540665 is a deficient number, since it is larger than the sum of its proper divisors (2311588295).

11540540665 is an equidigital number, since it uses as much as digits as its factorization.

11540540665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580031.

The product of its (nonzero) digits is 72000, while the sum is 37.

The spelling of 11540540665 in words is "eleven billion, five hundred forty million, five hundred forty thousand, six hundred sixty-five".