10805457749 has 2 divisors, whose sum is σ = 10805457750. Its totient is φ = 10805457748.

The previous prime is 10805457701. The next prime is 10805457769. The reversal of 10805457749 is 94775450801.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10744773649 + 60684100 = 103657^2 + 7790^2 .

It is a cyclic number.

It is not a de Polignac number, because 10805457749 - 2²⁰ = 10804409173 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10805457697 and 10805457706.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10805457769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5402728874 + 5402728875.

It is an arithmetic number, because the mean of its divisors is an integer number (5402728875).

Almost surely, 2^10805457749 is an apocalyptic number.

It is an amenable number.

10805457749 is a deficient number, since it is larger than the sum of its proper divisors (1).

10805457749 is an equidigital number, since it uses as much as digits as its factorization.

10805457749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1411200, while the sum is 50.

The spelling of 10805457749 in words is "ten billion, eight hundred five million, four hundred fifty-seven thousand, seven hundred forty-nine".