11519838497 has 4 divisors (see below), whose sum is σ = 11520478356. Its totient is φ = 11519198640.

The previous prime is 11519838493. The next prime is 11519838553. The reversal of 11519838497 is 79483891511.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2744083456 + 8775755041 = 52384^2 + 93679^2 .

It is a cyclic number.

It is not a de Polignac number, because 11519838497 - 2² = 11519838493 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11519838493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 292118 + ... + 329199.

It is an arithmetic number, because the mean of its divisors is an integer number (2880119589).

Almost surely, 2^11519838497 is an apocalyptic number.

It is an amenable number.

11519838497 is a deficient number, since it is larger than the sum of its proper divisors (639859).

11519838497 is an equidigital number, since it uses as much as digits as its factorization.

11519838497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639858.

The product of its digits is 2177280, while the sum is 56.

The spelling of 11519838497 in words is "eleven billion, five hundred nineteen million, eight hundred thirty-eight thousand, four hundred ninety-seven".