2273491777657 has 2 divisors, whose sum is σ = 2273491777658. Its totient is φ = 2273491777656.

The previous prime is 2273491777591. The next prime is 2273491777691. The reversal of 2273491777657 is 7567771943722.

2273491777657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1662787039081 + 610704738576 = 1289491^2 + 781476^2 .

It is a cyclic number.

It is not a de Polignac number, because 2273491777657 - 2¹¹ = 2273491775609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2273491777592 and 2273491777601.

It is not a weakly prime, because it can be changed into another prime (2273491777457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1136745888828 + 1136745888829.

It is an arithmetic number, because the mean of its divisors is an integer number (1136745888829).

Almost surely, 2^{2273491777657} is an apocalyptic number.

It is an amenable number.

2273491777657 is a deficient number, since it is larger than the sum of its proper divisors (1).

2273491777657 is an equidigital number, since it uses as much as digits as its factorization.

2273491777657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217818720, while the sum is 67.

The spelling of 2273491777657 in words is "two trillion, two hundred seventy-three billion, four hundred ninety-one million, seven hundred seventy-seven thousand, six hundred fifty-seven".