11515506065 has 8 divisors (see below), whose sum is σ = 15792694080. Its totient is φ = 7896346992.

The previous prime is 11515505993. The next prime is 11515506083. The reversal of 11515506065 is 56060551511.

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 11515506065 - 2¹⁴ = 11515489681 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 329014459 = 11515506065 / (1 + 1 + 5 + 1 + 5 + 5 + 0 + 6 + 0 + 6 + 5).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164507195 + ... + 164507264.

It is an arithmetic number, because the mean of its divisors is an integer number (1974086760).

Almost surely, 2^11515506065 is an apocalyptic number.

It is an amenable number.

11515506065 is a deficient number, since it is larger than the sum of its proper divisors (4277188015).

11515506065 is an equidigital number, since it uses as much as digits as its factorization.

11515506065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329014471.

The product of its (nonzero) digits is 22500, while the sum is 35.

The spelling of 11515506065 in words is "eleven billion, five hundred fifteen million, five hundred six thousand, sixty-five".