11529640819 has 8 divisors (see below), whose sum is σ = 12342168000. Its totient is φ = 10737684072.

The previous prime is 11529640799. The next prime is 11529640823. The reversal of 11529640819 is 91804692511.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11529640819 - 2¹³ = 11529632627 is a prime.

It is a super-2 number, since 2×11529640819² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11529640219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5141449 + ... + 5143690.

It is an arithmetic number, because the mean of its divisors is an integer number (1542771000).

Almost surely, 2^11529640819 is an apocalyptic number.

11529640819 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

11529640819 is a deficient number, since it is larger than the sum of its proper divisors (812527181).

11529640819 is a wasteful number, since it uses less digits than its factorization.

11529640819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10285217.

The product of its (nonzero) digits is 155520, while the sum is 46.

The spelling of 11529640819 in words is "eleven billion, five hundred twenty-nine million, six hundred forty thousand, eight hundred nineteen".