13121501986 has 16 divisors (see below), whose sum is σ = 20844380160. Its totient is φ = 6173536320.

The previous prime is 13121501941. The next prime is 13121501989. The reversal of 13121501986 is 68910512131.

It is not an unprimeable number, because it can be changed into a prime (13121501989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136351 + ... + 211741.

It is an arithmetic number, because the mean of its divisors is an integer number (1302773760).

Almost surely, 2^13121501986 is an apocalyptic number.

13121501986 is a deficient number, since it is larger than the sum of its proper divisors (7722878174).

13121501986 is a wasteful number, since it uses less digits than its factorization.

13121501986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80529.

The product of its (nonzero) digits is 12960, while the sum is 37.

The spelling of 13121501986 in words is "thirteen billion, one hundred twenty-one million, five hundred one thousand, nine hundred eighty-six".