11667540215 has 32 divisors (see below), whose sum is σ = 15335018496. Its totient is φ = 8483719680.

The previous prime is 11667540193. The next prime is 11667540223. The reversal of 11667540215 is 51204576611.

It is not a de Polignac number, because 11667540215 - 2¹⁴ = 11667523831 is a prime.

It is a super-2 number, since 2×11667540215² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1321004 + ... + 1329806.

It is an arithmetic number, because the mean of its divisors is an integer number (479219328).

Almost surely, 2^11667540215 is an apocalyptic number.

11667540215 is a deficient number, since it is larger than the sum of its proper divisors (3667478281).

11667540215 is a wasteful number, since it uses less digits than its factorization.

11667540215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9359.

The product of its (nonzero) digits is 50400, while the sum is 38.

The spelling of 11667540215 in words is "eleven billion, six hundred sixty-seven million, five hundred forty thousand, two hundred fifteen".