12087699155 has 16 divisors (see below), whose sum is σ = 16595656704. Its totient is φ = 8279587680.

The previous prime is 12087699137. The next prime is 12087699161. The reversal of 12087699155 is 55199678021.

It is a happy number.

It is not a de Polignac number, because 12087699155 - 2¹⁶ = 12087633619 is a prime.

It is a super-2 number, since 2×12087699155² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12087699097 and 12087699106.

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, 157667 + ... + 221436.

It is an arithmetic number, because the mean of its divisors is an integer number (1037228544).

Almost surely, 2^12087699155 is an apocalyptic number.

12087699155 is a deficient number, since it is larger than the sum of its proper divisors (4507957549).

12087699155 is an equidigital number, since it uses as much as digits as its factorization.

12087699155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380026.

The product of its (nonzero) digits is 1360800, while the sum is 53.

The spelling of 12087699155 in words is "twelve billion, eighty-seven million, six hundred ninety-nine thousand, one hundred fifty-five".