11515355145515 has 8 divisors (see below), whose sum is σ = 14881382034288. Its totient is φ = 8503646876640.

The previous prime is 11515355145509. The next prime is 11515355145571. The reversal of 11515355145515 is 51554155351511.

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

It is not a de Polignac number, because 11515355145515 - 2²⁴ = 11515338368299 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11515355145515.

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, 88579654901 + ... + 88579655030.

It is an arithmetic number, because the mean of its divisors is an integer number (1860172754286).

Almost surely, 2^{11515355145515} is an apocalyptic number.

11515355145515 is a deficient number, since it is larger than the sum of its proper divisors (3366026888773).

11515355145515 is a wasteful number, since it uses less digits than its factorization.

11515355145515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177159309949.

The product of its digits is 937500, while the sum is 47.

The spelling of 11515355145515 in words is "eleven trillion, five hundred fifteen billion, three hundred fifty-five million, one hundred forty-five thousand, five hundred fifteen".