215455415545 has 32 divisors (see below), whose sum is σ = 269198032896. Its totient is φ = 165361694400.

The previous prime is 215455415533. The next prime is 215455415597. The reversal of 215455415545 is 545514554512.

215455415545 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 215455415545 - 2⁹ = 215455415033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 215455415495 and 215455415504.

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, 30921652 + ... + 30928618.

It is an arithmetic number, because the mean of its divisors is an integer number (8412438528).

Almost surely, 2^215455415545 is an apocalyptic number.

It is an amenable number.

215455415545 is a deficient number, since it is larger than the sum of its proper divisors (53742617351).

215455415545 is a wasteful number, since it uses less digits than its factorization.

215455415545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8701.

The product of its digits is 2000000, while the sum is 46.

The spelling of 215455415545 in words is "two hundred fifteen billion, four hundred fifty-five million, four hundred fifteen thousand, five hundred forty-five".