11155946759551 has 32 divisors (see below), whose sum is σ = 12533176475136. Its totient is φ = 9843939072000.

The previous prime is 11155946759539. The next prime is 11155946759561. The reversal of 11155946759551 is 15595764955111.

It is a happy number.

It is not a de Polignac number, because 11155946759551 - 2²¹ = 11155944662399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11155946759521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55368271 + ... + 55569391.

It is an arithmetic number, because the mean of its divisors is an integer number (391661764848).

Almost surely, 2^{11155946759551} is an apocalyptic number.

11155946759551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11155946759551 is a deficient number, since it is larger than the sum of its proper divisors (1377229715585).

11155946759551 is a wasteful number, since it uses less digits than its factorization.

11155946759551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202303.

The product of its digits is 42525000, while the sum is 64.

The spelling of 11155946759551 in words is "eleven trillion, one hundred fifty-five billion, nine hundred forty-six million, seven hundred fifty-nine thousand, five hundred fifty-one".