2271664051368 has 64 divisors (see below), whose sum is σ = 5862641241600. Its totient is φ = 732759555840.

The previous prime is 2271664051361. The next prime is 2271664051369. The reversal of 2271664051368 is 8631504661722.

It is a self number, because there is not a number n which added to its sum of digits gives 2271664051368.

It is not an unprimeable number, because it can be changed into a prime (2271664051361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18548638 + ... + 18670706.

It is an arithmetic number, because the mean of its divisors is an integer number (91603769400).

Almost surely, 2^{2271664051368} is an apocalyptic number.

It is an amenable number.

2271664051368 is an abundant number, since it is smaller than the sum of its proper divisors (3590977190232).

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

2271664051368 is a wasteful number, since it uses less digits than its factorization.

2271664051368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147122 (or 147118 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 51.

The spelling of 2271664051368 in words is "two trillion, two hundred seventy-one billion, six hundred sixty-four million, fifty-one thousand, three hundred sixty-eight".