12015043162155 has 48 divisors (see below), whose sum is σ = 23915109853440. Its totient is φ = 5518871496000.

The previous prime is 12015043162147. The next prime is 12015043162169. The reversal of 12015043162155 is 55126134051021.

12015043162155 is a `hidden beast` number, since 1 + 2 + 0 + 1 + 5 + 0 + 431 + 6 + 215 + 5 = 666.

It is not a de Polignac number, because 12015043162155 - 2³ = 12015043162147 is a prime.

It is a super-2 number, since 2×12015043162155² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 638748871 + ... + 638767680.

It is an arithmetic number, because the mean of its divisors is an integer number (498231455280).

Almost surely, 2^{12015043162155} is an apocalyptic number.

12015043162155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12015043162155 is a deficient number, since it is larger than the sum of its proper divisors (11900066691285).

12015043162155 is a wasteful number, since it uses less digits than its factorization.

12015043162155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1277516592 (or 1277516589 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

The spelling of 12015043162155 in words is "twelve trillion, fifteen billion, forty-three million, one hundred sixty-two thousand, one hundred fifty-five".