20066244767 has 4 divisors (see below), whose sum is σ = 20153870520. Its totient is φ = 19978619016.

The previous prime is 20066244733. The next prime is 20066244769. The reversal of 20066244767 is 76744266002.

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 20066244767 - 2⁶ = 20066244703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20066244769) 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, 43812533 + ... + 43812990.

It is an arithmetic number, because the mean of its divisors is an integer number (5038467630).

Almost surely, 2^20066244767 is an apocalyptic number.

20066244767 is a deficient number, since it is larger than the sum of its proper divisors (87625753).

20066244767 is an equidigital number, since it uses as much as digits as its factorization.

20066244767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87625752.

The product of its (nonzero) digits is 677376, while the sum is 44.

The spelling of 20066244767 in words is "twenty billion, sixty-six million, two hundred forty-four thousand, seven hundred sixty-seven".