215042204545 has 16 divisors (see below), whose sum is σ = 294935114880. Its totient is φ = 147447465984.

The previous prime is 215042204527. The next prime is 215042204563. The reversal of 215042204545 is 545402240512.

It is an interprime number because it is at equal distance from previous prime (215042204527) and next prime (215042204563).

It is not a de Polignac number, because 215042204545 - 2²³ = 215033815937 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 215042204545.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 331486 + ... + 734824.

It is an arithmetic number, because the mean of its divisors is an integer number (18433444680).

Almost surely, 2^215042204545 is an apocalyptic number.

It is an amenable number.

215042204545 is a deficient number, since it is larger than the sum of its proper divisors (79892910335).

215042204545 is a wasteful number, since it uses less digits than its factorization.

215042204545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418584.

The product of its (nonzero) digits is 64000, while the sum is 34.

The spelling of 215042204545 in words is "two hundred fifteen billion, forty-two million, two hundred four thousand, five hundred forty-five".