11581433819 has 2 divisors, whose sum is σ = 11581433820. Its totient is φ = 11581433818.

The previous prime is 11581433771. The next prime is 11581433833. The reversal of 11581433819 is 91833418511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11581433819 - 2¹² = 11581429723 is a prime.

It is a super-2 number, since 2×11581433819² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11581433819.

It is not a weakly prime, because it can be changed into another prime (11581433849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5790716909 + 5790716910.

It is an arithmetic number, because the mean of its divisors is an integer number (5790716910).

Almost surely, 2^11581433819 is an apocalyptic number.

11581433819 is a deficient number, since it is larger than the sum of its proper divisors (1).

11581433819 is an equidigital number, since it uses as much as digits as its factorization.

11581433819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 44.

The spelling of 11581433819 in words is "eleven billion, five hundred eighty-one million, four hundred thirty-three thousand, eight hundred nineteen".