13320021986 has 8 divisors (see below), whose sum is σ = 19992903084. Its totient is φ = 6655720960.

The previous prime is 13320021983. The next prime is 13320022007. The reversal of 13320021986 is 68912002331.

It can be written as a sum of positive squares in 2 ways, for example, as 10107286225 + 3212735761 = 100535^2 + 56681^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (13320021983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2141135 + ... + 2147346.

Almost surely, 2^13320021986 is an apocalyptic number.

13320021986 is a deficient number, since it is larger than the sum of its proper divisors (6672881098).

13320021986 is a wasteful number, since it uses less digits than its factorization.

13320021986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4290036.

The product of its (nonzero) digits is 15552, while the sum is 35.

The spelling of 13320021986 in words is "thirteen billion, three hundred twenty million, twenty-one thousand, nine hundred eighty-six".