11198653950721 has 2 divisors, whose sum is σ = 11198653950722. Its totient is φ = 11198653950720.

The previous prime is 11198653950689. The next prime is 11198653950791. The reversal of 11198653950721 is 12705935689111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10851167280321 + 347486670400 = 3294111^2 + 589480^2 .

It is a cyclic number.

It is not a de Polignac number, because 11198653950721 - 2⁵ = 11198653950689 is a prime.

It is a super-2 number, since 2×11198653950721² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11198653950791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5599326975360 + 5599326975361.

It is an arithmetic number, because the mean of its divisors is an integer number (5599326975361).

Almost surely, 2^{11198653950721} is an apocalyptic number.

It is an amenable number.

11198653950721 is a deficient number, since it is larger than the sum of its proper divisors (1).

11198653950721 is an equidigital number, since it uses as much as digits as its factorization.

11198653950721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4082400, while the sum is 58.

The spelling of 11198653950721 in words is "eleven trillion, one hundred ninety-eight billion, six hundred fifty-three million, nine hundred fifty thousand, seven hundred twenty-one".