12663901155 has 32 divisors (see below), whose sum is σ = 20612994048. Its totient is φ = 6637769600.

The previous prime is 12663901141. The next prime is 12663901169. The reversal of 12663901155 is 55110936621.

It is a happy number.

It is a Cunningham number, because it is equal to 112534²-1.

It is an interprime number because it is at equal distance from previous prime (12663901141) and next prime (12663901169).

It is not a de Polignac number, because 12663901155 - 2⁵ = 12663901123 is a prime.

It is a super-2 number, since 2×12663901155² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 318850 + ... + 356360.

It is an arithmetic number, because the mean of its divisors is an integer number (644156064).

Almost surely, 2^12663901155 is an apocalyptic number.

12663901155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12663901155 is a deficient number, since it is larger than the sum of its proper divisors (7949092893).

12663901155 is a wasteful number, since it uses less digits than its factorization.

12663901155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37907.

The product of its (nonzero) digits is 48600, while the sum is 39.

The spelling of 12663901155 in words is "twelve billion, six hundred sixty-three million, nine hundred one thousand, one hundred fifty-five".