3563661620265 has 8 divisors (see below), whose sum is σ = 5701858592448. Its totient is φ = 1900619530800.

The previous prime is 3563661620257. The next prime is 3563661620293. The reversal of 3563661620265 is 5620261663653.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3563661620265 - 2³ = 3563661620257 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118788720661 + ... + 118788720690.

It is an arithmetic number, because the mean of its divisors is an integer number (712732324056).

Almost surely, 2^{3563661620265} is an apocalyptic number.

It is an amenable number.

3563661620265 is a deficient number, since it is larger than the sum of its proper divisors (2138196972183).

3563661620265 is a wasteful number, since it uses less digits than its factorization.

3563661620265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237577441359.

The product of its (nonzero) digits is 6998400, while the sum is 51.

The spelling of 3563661620265 in words is "three trillion, five hundred sixty-three billion, six hundred sixty-one million, six hundred twenty thousand, two hundred sixty-five".