13224908978 has 18 divisors (see below), whose sum is σ = 19980116919. Its totient is φ = 6565209312.

The previous prime is 13224908959. The next prime is 13224909011. The reversal of 13224908978 is 87980942231.

It can be written as a sum of positive squares in 5 ways, for example, as 5632052209 + 7592856769 = 75047^2 + 87137^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=81317.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 37893548 + ... + 37893896.

Almost surely, 2^13224908978 is an apocalyptic number.

13224908978 is a deficient number, since it is larger than the sum of its proper divisors (6755207941).

13224908978 is an frugal number, since it uses more digits than its factorization.

13224908978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1166 (or 584 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 53.

The spelling of 13224908978 in words is "thirteen billion, two hundred twenty-four million, nine hundred eight thousand, nine hundred seventy-eight".