13319971990 has 16 divisors (see below), whose sum is σ = 25820253648. Its totient is φ = 4918143456.

The previous prime is 13319971981. The next prime is 13319971997. The reversal of 13319971990 is 9917991331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13319971997) 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, 51230532 + ... + 51230791.

It is an arithmetic number, because the mean of its divisors is an integer number (1613765853).

Almost surely, 2^13319971990 is an apocalyptic number.

13319971990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13319971990 is a deficient number, since it is larger than the sum of its proper divisors (12500281658).

13319971990 is a wasteful number, since it uses less digits than its factorization.

13319971990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102461343.

The product of its (nonzero) digits is 413343, while the sum is 52.

The spelling of 13319971990 in words is "thirteen billion, three hundred nineteen million, nine hundred seventy-one thousand, nine hundred ninety".