13434221240 has 64 divisors (see below), whose sum is σ = 33026110560. Its totient is φ = 4877585920.

The previous prime is 13434221237. The next prime is 13434221243. The reversal of 13434221240 is 4212243431.

It is an interprime number because it is at equal distance from previous prime (13434221237) and next prime (13434221243).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13434221243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 263942 + ... + 310698.

Almost surely, 2^13434221240 is an apocalyptic number.

13434221240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13434221240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16513055280).

13434221240 is an abundant number, since it is smaller than the sum of its proper divisors (19591889320).

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

13434221240 is a wasteful number, since it uses less digits than its factorization.

13434221240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47432 (or 47428 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 13434221240 its reverse (4212243431), we get a palindrome (17646464671).

The spelling of 13434221240 in words is "thirteen billion, four hundred thirty-four million, two hundred twenty-one thousand, two hundred forty".