11681567203 has 2 divisors, whose sum is σ = 11681567204. Its totient is φ = 11681567202.

The previous prime is 11681567197. The next prime is 11681567207. The reversal of 11681567203 is 30276518611.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11681567203 - 2⁹ = 11681566691 is a prime.

It is not a weakly prime, because it can be changed into another prime (11681567207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5840783601 + 5840783602.

It is an arithmetic number, because the mean of its divisors is an integer number (5840783602).

Almost surely, 2^11681567203 is an apocalyptic number.

11681567203 is a deficient number, since it is larger than the sum of its proper divisors (1).

11681567203 is an equidigital number, since it uses as much as digits as its factorization.

11681567203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 40.

The spelling of 11681567203 in words is "eleven billion, six hundred eighty-one million, five hundred sixty-seven thousand, two hundred three".