12811803015 has 32 divisors (see below), whose sum is σ = 22423458816. Its totient is φ = 6194828160.

The previous prime is 12811802989. The next prime is 12811803029. The reversal of 12811803015 is 51030811821.

It is not a de Polignac number, because 12811803015 - 2⁶ = 12811802951 is a prime.

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 31 ways as a sum of consecutive naturals, for example, 45232 + ... + 166341.

It is an arithmetic number, because the mean of its divisors is an integer number (700733088).

Almost surely, 2^12811803015 is an apocalyptic number.

12811803015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12811803015 is a deficient number, since it is larger than the sum of its proper divisors (9611655801).

12811803015 is a wasteful number, since it uses less digits than its factorization.

12811803015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211959.

The product of its (nonzero) digits is 1920, while the sum is 30.

The spelling of 12811803015 in words is "twelve billion, eight hundred eleven million, eight hundred three thousand, fifteen".