2072664220771 has 4 divisors (see below), whose sum is σ = 2072694980344. Its totient is φ = 2072633461200.

The previous prime is 2072664220751. The next prime is 2072664220789. The reversal of 2072664220771 is 1770224662702.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2072664220771 - 2⁷ = 2072664220643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2072664220751) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15278490 + ... + 15413551.

It is an arithmetic number, because the mean of its divisors is an integer number (518173745086).

Almost surely, 2^{2072664220771} is an apocalyptic number.

2072664220771 is a deficient number, since it is larger than the sum of its proper divisors (30759573).

2072664220771 is an equidigital number, since it uses as much as digits as its factorization.

2072664220771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30759572.

The product of its (nonzero) digits is 790272, while the sum is 46.

The spelling of 2072664220771 in words is "two trillion, seventy-two billion, six hundred sixty-four million, two hundred twenty thousand, seven hundred seventy-one".