11615171212005 has 32 divisors (see below), whose sum is σ = 18599397949440. Its totient is φ = 6189717729600.

The previous prime is 11615171211997. The next prime is 11615171212019. The reversal of 11615171212005 is 50021217151611.

11615171212005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11615171212005 - 2³ = 11615171211997 is a prime.

It is a super-2 number, since 2×11615171212005² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 203321836 + ... + 203378954.

It is an arithmetic number, because the mean of its divisors is an integer number (581231185920).

Almost surely, 2^{11615171212005} is an apocalyptic number.

11615171212005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11615171212005 is a deficient number, since it is larger than the sum of its proper divisors (6984226737435).

11615171212005 is a wasteful number, since it uses less digits than its factorization.

11615171212005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67921.

The product of its (nonzero) digits is 4200, while the sum is 33.

Adding to 11615171212005 its reverse (50021217151611), we get a palindrome (61636388363616).

The spelling of 11615171212005 in words is "eleven trillion, six hundred fifteen billion, one hundred seventy-one million, two hundred twelve thousand, five".