11579726949 has 16 divisors (see below), whose sum is σ = 18214502400. Its totient is φ = 6403535280.

The previous prime is 11579726923. The next prime is 11579726959. The reversal of 11579726949 is 94962797511.

It is not a de Polignac number, because 11579726949 - 2⁹ = 11579726437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11579726892 and 11579726901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11579726959) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8893149 + ... + 8894450.

It is an arithmetic number, because the mean of its divisors is an integer number (1138406400).

Almost surely, 2^11579726949 is an apocalyptic number.

It is an amenable number.

11579726949 is a deficient number, since it is larger than the sum of its proper divisors (6634775451).

11579726949 is a wasteful number, since it uses less digits than its factorization.

11579726949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17787640.

The product of its digits is 8573040, while the sum is 60.

The spelling of 11579726949 in words is "eleven billion, five hundred seventy-nine million, seven hundred twenty-six thousand, nine hundred forty-nine".