11555116534 has 16 divisors (see below), whose sum is σ = 18683175168. Its totient is φ = 5328211392.

The previous prime is 11555116523. The next prime is 11555116543. The reversal of 11555116534 is 43561155511.

It is a super-2 number, since 2×11555116534² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11555116493 and 11555116502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176167 + ... + 232690.

It is an arithmetic number, because the mean of its divisors is an integer number (1167698448).

Almost surely, 2^11555116534 is an apocalyptic number.

11555116534 is a deficient number, since it is larger than the sum of its proper divisors (7128058634).

11555116534 is a wasteful number, since it uses less digits than its factorization.

11555116534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409959.

The product of its digits is 45000, while the sum is 37.

The spelling of 11555116534 in words is "eleven billion, five hundred fifty-five million, one hundred sixteen thousand, five hundred thirty-four".