13421530444 has 12 divisors (see below), whose sum is σ = 26843060944. Its totient is φ = 5752084464.

The previous prime is 13421530433. The next prime is 13421530487. The reversal of 13421530444 is 44403512431.

13421530444 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239670159 + ... + 239670214.

Almost surely, 2^13421530444 is an apocalyptic number.

13421530444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13421530444 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13421530444 is a wasteful number, since it uses less digits than its factorization.

13421530444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479340384 (or 479340382 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

The spelling of 13421530444 in words is "thirteen billion, four hundred twenty-one million, five hundred thirty thousand, four hundred forty-four".