545221205415 has 24 divisors (see below), whose sum is σ = 962881227360. Its totient is φ = 285298138944.

The previous prime is 545221205407. The next prime is 545221205437. The reversal of 545221205415 is 514502122545.

545221205415 is a `hidden beast` number, since 5 + 4 + 522 + 120 + 5 + 4 + 1 + 5 = 666.

It is not a de Polignac number, because 545221205415 - 2³ = 545221205407 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 545221205415.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 114299755 + ... + 114304524.

It is an arithmetic number, because the mean of its divisors is an integer number (40120051140).

Almost surely, 2^545221205415 is an apocalyptic number.

545221205415 is a deficient number, since it is larger than the sum of its proper divisors (417660021945).

545221205415 is a wasteful number, since it uses less digits than its factorization.

545221205415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228604343 (or 228604340 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 36.

The spelling of 545221205415 in words is "five hundred forty-five billion, two hundred twenty-one million, two hundred five thousand, four hundred fifteen".