11550215510165 has 8 divisors (see below), whose sum is σ = 13880316877728. Its totient is φ = 9226800231120.

The previous prime is 11550215510153. The next prime is 11550215510213. The reversal of 11550215510165 is 56101551205511.

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

It is not a de Polignac number, because 11550215510165 - 2¹⁸ = 11550215248021 is a prime.

It is a super-2 number, since 2×11550215510165² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1671518327 + ... + 1671525236.

It is an arithmetic number, because the mean of its divisors is an integer number (1735039609716).

Almost surely, 2^{11550215510165} is an apocalyptic number.

It is an amenable number.

11550215510165 is a deficient number, since it is larger than the sum of its proper divisors (2330101367563).

11550215510165 is an equidigital number, since it uses as much as digits as its factorization.

11550215510165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3343044259.

The product of its (nonzero) digits is 37500, while the sum is 38.

Adding to 11550215510165 its reverse (56101551205511), we get a palindrome (67651766715676).

The spelling of 11550215510165 in words is "eleven trillion, five hundred fifty billion, two hundred fifteen million, five hundred ten thousand, one hundred sixty-five".