4215141592561 has 9 divisors (see below), whose sum is σ = 4279132791801. Its totient is φ = 4152093528132.

The previous prime is 4215141592559. The next prime is 4215141592573. The reversal of 4215141592561 is 1652951415124.

It is a happy number.

The square root of 4215141592561 is 2053081.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 4215141592561 - 2¹ = 4215141592559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4215141592591) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 137541106 + ... + 137571748.

It is an arithmetic number, because the mean of its divisors is an integer number (475459199089).

Almost surely, 2^{4215141592561} is an apocalyptic number.

4215141592561 is the 2053081-st square number.

4215141592561 is the 1026541-st centered octagonal number.

It is an amenable number.

4215141592561 is a deficient number, since it is larger than the sum of its proper divisors (63991199240).

4215141592561 is an frugal number, since it uses more digits than its factorization.

4215141592561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61420 (or 30710 counting only the distinct ones).

The product of its digits is 432000, while the sum is 46.

The spelling of 4215141592561 in words is "four trillion, two hundred fifteen billion, one hundred forty-one million, five hundred ninety-two thousand, five hundred sixty-one".