2266777021165 has 8 divisors (see below), whose sum is σ = 2722491610488. Its totient is φ = 1811848826880.

The previous prime is 2266777021147. The next prime is 2266777021189. The reversal of 2266777021165 is 5611207776622.

It can be written as a sum of positive squares in 4 ways, for example, as 70965763236 + 2195811257929 = 266394^2 + 1481827^2 .

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

It is not a de Polignac number, because 2266777021165 - 2³⁹ = 1717021207277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196592416 + ... + 196603945.

It is an arithmetic number, because the mean of its divisors is an integer number (340311451311).

Almost surely, 2^{2266777021165} is an apocalyptic number.

It is an amenable number.

2266777021165 is a deficient number, since it is larger than the sum of its proper divisors (455714589323).

2266777021165 is a wasteful number, since it uses less digits than its factorization.

2266777021165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393197519.

The product of its (nonzero) digits is 2963520, while the sum is 52.

The spelling of 2266777021165 in words is "two trillion, two hundred sixty-six billion, seven hundred seventy-seven million, twenty-one thousand, one hundred sixty-five".