10851764549 has 2 divisors, whose sum is σ = 10851764550. Its totient is φ = 10851764548.

The previous prime is 10851764537. The next prime is 10851764579. The reversal of 10851764549 is 94546715801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8277724324 + 2574040225 = 90982^2 + 50735^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10851764549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10851764497 and 10851764506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10851764509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5425882274 + 5425882275.

It is an arithmetic number, because the mean of its divisors is an integer number (5425882275).

Almost surely, 2^10851764549 is an apocalyptic number.

It is an amenable number.

10851764549 is a deficient number, since it is larger than the sum of its proper divisors (1).

10851764549 is an equidigital number, since it uses as much as digits as its factorization.

10851764549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1209600, while the sum is 50.

The spelling of 10851764549 in words is "ten billion, eight hundred fifty-one million, seven hundred sixty-four thousand, five hundred forty-nine".