13149438240 has 96 divisors (see below), whose sum is σ = 41441682240. Its totient is φ = 3504743424.

The previous prime is 13149438223. The next prime is 13149438283. The reversal of 13149438240 is 4283494131.

It is a Cunningham number, because it is equal to 114671²-1.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1140987 + ... + 1152453.

It is an arithmetic number, because the mean of its divisors is an integer number (431684190).

Almost surely, 2^13149438240 is an apocalyptic number.

13149438240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13149438240 is an abundant number, since it is smaller than the sum of its proper divisors (28292244000).

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

13149438240 is a wasteful number, since it uses less digits than its factorization.

13149438240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13874 (or 13866 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The spelling of 13149438240 in words is "thirteen billion, one hundred forty-nine million, four hundred thirty-eight thousand, two hundred forty".