2773773856641 has 4 divisors (see below), whose sum is σ = 3698365142192. Its totient is φ = 1849182571092.

The previous prime is 2773773856583. The next prime is 2773773856649. The reversal of 2773773856641 is 1466583773772.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2773773856641 - 2⁶ = 2773773856577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2773773856649) 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, 462295642771 + ... + 462295642776.

It is an arithmetic number, because the mean of its divisors is an integer number (924591285548).

Almost surely, 2^{2773773856641} is an apocalyptic number.

It is an amenable number.

2773773856641 is a deficient number, since it is larger than the sum of its proper divisors (924591285551).

2773773856641 is an equidigital number, since it uses as much as digits as its factorization.

2773773856641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924591285550.

The product of its digits is 248935680, while the sum is 66.

The spelling of 2773773856641 in words is "two trillion, seven hundred seventy-three billion, seven hundred seventy-three million, eight hundred fifty-six thousand, six hundred forty-one".