15438824212 has 12 divisors (see below), whose sum is σ = 30877648480. Its totient is φ = 6616638936.

The previous prime is 15438824179. The next prime is 15438824251. The reversal of 15438824212 is 21242883451.

It is a happy number.

15438824212 is an admirable number.

It is a congruent 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, 275693262 + ... + 275693317.

Almost surely, 2^15438824212 is an apocalyptic number.

It is an amenable number.

15438824212 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.

15438824212 is a wasteful number, since it uses less digits than its factorization.

15438824212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551386590 (or 551386588 counting only the distinct ones).

The product of its digits is 122880, while the sum is 40.

The spelling of 15438824212 in words is "fifteen billion, four hundred thirty-eight million, eight hundred twenty-four thousand, two hundred twelve".