11897479155 has 16 divisors (see below), whose sum is σ = 20155729824. Its totient is φ = 5972067840.

The previous prime is 11897479063. The next prime is 11897479211. The reversal of 11897479155 is 55197479811.

It is not a de Polignac number, because 11897479155 - 2¹¹ = 11897477107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11897479095 and 11897479104.

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 15 ways as a sum of consecutive naturals, for example, 23328136 + ... + 23328645.

It is an arithmetic number, because the mean of its divisors is an integer number (1259733114).

Almost surely, 2^11897479155 is an apocalyptic number.

11897479155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11897479155 is a deficient number, since it is larger than the sum of its proper divisors (8258250669).

11897479155 is a wasteful number, since it uses less digits than its factorization.

11897479155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46656806.

The product of its digits is 3175200, while the sum is 57.

The spelling of 11897479155 in words is "eleven billion, eight hundred ninety-seven million, four hundred seventy-nine thousand, one hundred fifty-five".