13421057908 has 6 divisors (see below), whose sum is σ = 23486851346. Its totient is φ = 6710528952.

The previous prime is 13421057891. The next prime is 13421057921. The reversal of 13421057908 is 80975012431.

It can be written as a sum of positive squares in only one way, i.e., 11590244964 + 1830812944 = 107658^2 + 42788^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1677632235 + ... + 1677632242.

Almost surely, 2^13421057908 is an apocalyptic number.

It is an amenable number.

13421057908 is a deficient number, since it is larger than the sum of its proper divisors (10065793438).

13421057908 is a wasteful number, since it uses less digits than its factorization.

13421057908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3355264481 (or 3355264479 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The spelling of 13421057908 in words is "thirteen billion, four hundred twenty-one million, fifty-seven thousand, nine hundred eight".