11503653643 has 2 divisors, whose sum is σ = 11503653644. Its totient is φ = 11503653642.

The previous prime is 11503653611. The next prime is 11503653649. The reversal of 11503653643 is 34635630511.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (34635630511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11503653643 - 2⁵ = 11503653611 is a prime.

It is not a weakly prime, because it can be changed into another prime (11503653649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5751826821 + 5751826822.

It is an arithmetic number, because the mean of its divisors is an integer number (5751826822).

Almost surely, 2^11503653643 is an apocalyptic number.

11503653643 is a deficient number, since it is larger than the sum of its proper divisors (1).

11503653643 is an equidigital number, since it uses as much as digits as its factorization.

11503653643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 97200, while the sum is 37.

The spelling of 11503653643 in words is "eleven billion, five hundred three million, six hundred fifty-three thousand, six hundred forty-three".