2265805566851 has 8 divisors (see below), whose sum is σ = 2457602595504. Its totient is φ = 2080510132480.

The previous prime is 2265805566803. The next prime is 2265805566859. The reversal of 2265805566851 is 1586655085622.

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

It is a cyclic number.

It is not a de Polignac number, because 2265805566851 - 2¹⁴ = 2265805550467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2265805566859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1625397845 + ... + 1625399238.

It is an arithmetic number, because the mean of its divisors is an integer number (307200324438).

Almost surely, 2^{2265805566851} is an apocalyptic number.

2265805566851 is a deficient number, since it is larger than the sum of its proper divisors (191797028653).

2265805566851 is a wasteful number, since it uses less digits than its factorization.

2265805566851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3250797141.

The product of its (nonzero) digits is 34560000, while the sum is 59.

The spelling of 2265805566851 in words is "two trillion, two hundred sixty-five billion, eight hundred five million, five hundred sixty-six thousand, eight hundred fifty-one".