11515320434 has 8 divisors (see below), whose sum is σ = 17694272988. Its totient is φ = 5617229440.

The previous prime is 11515320431. The next prime is 11515320437. The reversal of 11515320434 is 43402351511.

It is an interprime number because it is at equal distance from previous prime (11515320431) and next prime (11515320437).

It can be written as a sum of positive squares in 2 ways, for example, as 7993254025 + 3522066409 = 89405^2 + 59347^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 11515320397 and 11515320406.

It is not an unprimeable number, because it can be changed into a prime (11515320431) 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 in 3 ways as a sum of consecutive naturals, for example, 70215287 + ... + 70215450.

Almost surely, 2^11515320434 is an apocalyptic number.

11515320434 is a deficient number, since it is larger than the sum of its proper divisors (6178952554).

11515320434 is a wasteful number, since it uses less digits than its factorization.

11515320434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140430780.

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 11515320434 its reverse (43402351511), we get a palindrome (54917671945).

The spelling of 11515320434 in words is "eleven billion, five hundred fifteen million, three hundred twenty thousand, four hundred thirty-four".