13642247450 has 48 divisors (see below), whose sum is σ = 27369170136. Its totient is φ = 5029267200.

The previous prime is 13642247449. The next prime is 13642247453. The reversal of 13642247450 is 5474224631.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 844076809 + 12798170641 = 29053^2 + 113129^2 .

It is a super-2 number, since 2×13642247450² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13642247453) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 408380 + ... + 440520.

Almost surely, 2^13642247450 is an apocalyptic number.

13642247450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13642247450 is an abundant number, since it is smaller than the sum of its proper divisors (13726922686).

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

13642247450 is a wasteful number, since it uses less digits than its factorization.

13642247450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32819 (or 32814 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 38.

The spelling of 13642247450 in words is "thirteen billion, six hundred forty-two million, two hundred forty-seven thousand, four hundred fifty".