11555127849 has 16 divisors (see below), whose sum is σ = 16084151424. Its totient is φ = 7365072000.

The previous prime is 11555127847. The next prime is 11555127853. The reversal of 11555127849 is 94872155511.

It is not a de Polignac number, because 11555127849 - 2¹ = 11555127847 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11555127798 and 11555127807.

It is not an unprimeable number, because it can be changed into a prime (11555127847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115549 + ... + 190949.

It is an arithmetic number, because the mean of its divisors is an integer number (1005259464).

Almost surely, 2^11555127849 is an apocalyptic number.

It is an amenable number.

11555127849 is a deficient number, since it is larger than the sum of its proper divisors (4529023575).

11555127849 is a wasteful number, since it uses less digits than its factorization.

11555127849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77648.

The product of its digits is 504000, while the sum is 48.

It can be divided in two parts, 11 and 555127849, that added together give a triangular number (555127860 = T₃₃₃₂₀).

The spelling of 11555127849 in words is "eleven billion, five hundred fifty-five million, one hundred twenty-seven thousand, eight hundred forty-nine".