13642305442544 has 10 divisors (see below), whose sum is σ = 26431966794960. Its totient is φ = 6821152721264.

The previous prime is 13642305442511. The next prime is 13642305442547. The reversal of 13642305442544 is 44524450324631.

It is a happy number.

It is a super-2 number, since 2×13642305442544² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13642305442547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 426322045064 + ... + 426322045095.

It is an arithmetic number, because the mean of its divisors is an integer number (2643196679496).

Almost surely, 2^{13642305442544} is an apocalyptic number.

It is an amenable number.

13642305442544 is a deficient number, since it is larger than the sum of its proper divisors (12789661352416).

13642305442544 is an equidigital number, since it uses as much as digits as its factorization.

13642305442544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 852644090167 (or 852644090161 counting only the distinct ones).

The product of its (nonzero) digits is 5529600, while the sum is 47.

The spelling of 13642305442544 in words is "thirteen trillion, six hundred forty-two billion, three hundred five million, four hundred forty-two thousand, five hundred forty-four".