11702349821 has 2 divisors, whose sum is σ = 11702349822. Its totient is φ = 11702349820.

The previous prime is 11702349781. The next prime is 11702349829. The reversal of 11702349821 is 12894320711.

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., 11489481721 + 212868100 = 107189^2 + 14590^2 .

It is an emirp because it is prime and its reverse (12894320711) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11702349821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11702349829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5851174910 + 5851174911.

It is an arithmetic number, because the mean of its divisors is an integer number (5851174911).

Almost surely, 2^11702349821 is an apocalyptic number.

It is an amenable number.

11702349821 is a deficient number, since it is larger than the sum of its proper divisors (1).

11702349821 is an equidigital number, since it uses as much as digits as its factorization.

11702349821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 38.

The spelling of 11702349821 in words is "eleven billion, seven hundred two million, three hundred forty-nine thousand, eight hundred twenty-one".