11779173853551 has 24 divisors (see below), whose sum is σ = 18324101040336. Its totient is φ = 7248349825920.

The previous prime is 11779173853541. The next prime is 11779173853561. The reversal of 11779173853551 is 15535837197711.

11779173853551 is a `hidden beast` number, since 1 + 1 + 7 + 7 + 9 + 1 + 73 + 8 + 5 + 3 + 551 = 666.

It is an interprime number because it is at equal distance from previous prime (11779173853541) and next prime (11779173853561).

It is not a de Polignac number, because 11779173853551 - 2⁵ = 11779173853519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11779173853541) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 292230 + ... + 4862483.

It is an arithmetic number, because the mean of its divisors is an integer number (763504210014).

Almost surely, 2^{11779173853551} is an apocalyptic number.

11779173853551 is a deficient number, since it is larger than the sum of its proper divisors (6544927186785).

11779173853551 is a wasteful number, since it uses less digits than its factorization.

11779173853551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5174263 (or 5174260 counting only the distinct ones).

The product of its digits is 27783000, while the sum is 63.

The spelling of 11779173853551 in words is "eleven trillion, seven hundred seventy-nine billion, one hundred seventy-three million, eight hundred fifty-three thousand, five hundred fifty-one".