11578872779 has 6 divisors (see below), whose sum is σ = 11775965460. Its totient is φ = 11381808176.

The previous prime is 11578872769. The next prime is 11578872787. The reversal of 11578872779 is 97727887511.

It is not a de Polignac number, because 11578872779 - 2²⁴ = 11562095563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11578872709) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 819527 + ... + 833535.

It is an arithmetic number, because the mean of its divisors is an integer number (1962660910).

Almost surely, 2^11578872779 is an apocalyptic number.

11578872779 is a deficient number, since it is larger than the sum of its proper divisors (197092681).

11578872779 is an frugal number, since it uses more digits than its factorization.

11578872779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28077 (or 14068 counting only the distinct ones).

The product of its digits is 13829760, while the sum is 62.

The spelling of 11578872779 in words is "eleven billion, five hundred seventy-eight million, eight hundred seventy-two thousand, seven hundred seventy-nine".