2155433534415 has 64 divisors (see below), whose sum is σ = 4379587430400. Its totient is φ = 985274917632.

The previous prime is 2155433534357. The next prime is 2155433534447. The reversal of 2155433534415 is 5144353345512.

2155433534415 is a `hidden beast` number, since 2 + 1 + 5 + 543 + 3 + 53 + 44 + 15 = 666.

It is not a de Polignac number, because 2155433534415 - 2¹⁰ = 2155433533391 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15740734 + ... + 15877076.

It is an arithmetic number, because the mean of its divisors is an integer number (68431053600).

Almost surely, 2^{2155433534415} is an apocalyptic number.

2155433534415 is an abundant number, since it is smaller than the sum of its proper divisors (2224153895985).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2155433534415 is a wasteful number, since it uses less digits than its factorization.

2155433534415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153093 (or 153087 counting only the distinct ones).

The product of its digits is 2160000, while the sum is 45.

Adding to 2155433534415 its reverse (5144353345512), we get a palindrome (7299786879927).

The spelling of 2155433534415 in words is "two trillion, one hundred fifty-five billion, four hundred thirty-three million, five hundred thirty-four thousand, four hundred fifteen".