11728526515 has 16 divisors (see below), whose sum is σ = 14774492160. Its totient is φ = 8926241760.

The previous prime is 11728526501. The next prime is 11728526539. The reversal of 11728526515 is 51562582711.

It is not a de Polignac number, because 11728526515 - 2⁵ = 11728526483 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 632109 + ... + 650398.

It is an arithmetic number, because the mean of its divisors is an integer number (923405760).

Almost surely, 2^11728526515 is an apocalyptic number.

11728526515 is a deficient number, since it is larger than the sum of its proper divisors (3045965645).

11728526515 is a wasteful number, since it uses less digits than its factorization.

11728526515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1282602.

The product of its digits is 168000, while the sum is 43.

The spelling of 11728526515 in words is "eleven billion, seven hundred twenty-eight million, five hundred twenty-six thousand, five hundred fifteen".