2145569910668 has 48 divisors (see below), whose sum is σ = 3864148990464. Its totient is φ = 1041648802560.

The previous prime is 2145569910637. The next prime is 2145569910683. The reversal of 2145569910668 is 8660199655412.

It is a self number, because there is not a number n which added to its sum of digits gives 2145569910668.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151377230 + ... + 151391402.

It is an arithmetic number, because the mean of its divisors is an integer number (80503103968).

Almost surely, 2^{2145569910668} is an apocalyptic number.

It is an amenable number.

2145569910668 is a deficient number, since it is larger than the sum of its proper divisors (1718579079796).

2145569910668 is a wasteful number, since it uses less digits than its factorization.

2145569910668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16242 (or 16240 counting only the distinct ones).

The product of its (nonzero) digits is 27993600, while the sum is 62.

The spelling of 2145569910668 in words is "two trillion, one hundred forty-five billion, five hundred sixty-nine million, nine hundred ten thousand, six hundred sixty-eight".