215065413555 has 16 divisors (see below), whose sum is σ = 344470364064. Its totient is φ = 114579653120.

The previous prime is 215065413551. The next prime is 215065413599. The reversal of 215065413555 is 555314560512.

It is a happy number.

It is not a de Polignac number, because 215065413555 - 2² = 215065413551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (215065413551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7604214 + ... + 7632443.

It is an arithmetic number, because the mean of its divisors is an integer number (21529397754).

Almost surely, 2^215065413555 is an apocalyptic number.

215065413555 is a deficient number, since it is larger than the sum of its proper divisors (129404950509).

215065413555 is a wasteful number, since it uses less digits than its factorization.

215065413555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15237606.

The product of its (nonzero) digits is 450000, while the sum is 42.

The spelling of 215065413555 in words is "two hundred fifteen billion, sixty-five million, four hundred thirteen thousand, five hundred fifty-five".