2195565281536 has 81 divisors (see below), whose sum is σ = 4817759852703. Its totient is φ = 997865679360.

The previous prime is 2195565281519. The next prime is 2195565281549. The reversal of 2195565281536 is 6351825655912.

The square root of 2195565281536 is 1481744.

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

It is a Duffinian number.

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 8 ways as a sum of consecutive naturals, for example, 260782735 + ... + 260791153.

Almost surely, 2^{2195565281536} is an apocalyptic number.

2195565281536 is the 1481744-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2195565281536

2195565281536 is an abundant number, since it is smaller than the sum of its proper divisors (2622194571167).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2195565281536 is an frugal number, since it uses more digits than its factorization.

2195565281536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16876 (or 8432 counting only the distinct ones).

The product of its digits is 19440000, while the sum is 58.

The spelling of 2195565281536 in words is "two trillion, one hundred ninety-five billion, five hundred sixty-five million, two hundred eighty-one thousand, five hundred thirty-six".