2126664747361 has 16 divisors (see below), whose sum is σ = 2651472258048. Its totient is φ = 1657112562000.

The previous prime is 2126664747271. The next prime is 2126664747373. The reversal of 2126664747361 is 1637474666212.

It is a happy number.

It is not a de Polignac number, because 2126664747361 - 2⁹ = 2126664746849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2126664747061) 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, 4940956 + ... + 5354098.

It is an arithmetic number, because the mean of its divisors is an integer number (165717016128).

Almost surely, 2^{2126664747361} is an apocalyptic number.

It is an amenable number.

2126664747361 is a deficient number, since it is larger than the sum of its proper divisors (524807510687).

2126664747361 is a wasteful number, since it uses less digits than its factorization.

2126664747361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480012.

The product of its digits is 12192768, while the sum is 55.

The spelling of 2126664747361 in words is "two trillion, one hundred twenty-six billion, six hundred sixty-four million, seven hundred forty-seven thousand, three hundred sixty-one".