11555717479 has 8 divisors (see below), whose sum is σ = 12247260480. Its totient is φ = 10865485056.

The previous prime is 11555717443. The next prime is 11555717489. The reversal of 11555717479 is 97471755511.

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 11555717479 - 2⁷ = 11555717351 is a prime.

It is a super-2 number, since 2×11555717479² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11555717489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 309454 + ... + 344779.

It is an arithmetic number, because the mean of its divisors is an integer number (1530907560).

Almost surely, 2^11555717479 is an apocalyptic number.

11555717479 is a deficient number, since it is larger than the sum of its proper divisors (691543001).

11555717479 is a wasteful number, since it uses less digits than its factorization.

11555717479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655289.

The product of its digits is 1543500, while the sum is 52.

The spelling of 11555717479 in words is "eleven billion, five hundred fifty-five million, seven hundred seventeen thousand, four hundred seventy-nine".