13642257302705 has 4 divisors (see below), whose sum is σ = 16370708763252. Its totient is φ = 10913805842160.

The previous prime is 13642257302701. The next prime is 13642257302741. The reversal of 13642257302705 is 50720375224631.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6978388688896 + 6663868613809 = 2641664^2 + 2581447^2 .

It is not a de Polignac number, because 13642257302705 - 2² = 13642257302701 is a prime.

It is a super-2 number, since 2×13642257302705² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13642257302705.

It is not an unprimeable number, because it can be changed into a prime (13642257302701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1364225730266 + ... + 1364225730275.

It is an arithmetic number, because the mean of its divisors is an integer number (4092677190813).

Almost surely, 2^{13642257302705} is an apocalyptic number.

It is an amenable number.

13642257302705 is a deficient number, since it is larger than the sum of its proper divisors (2728451460547).

13642257302705 is an equidigital number, since it uses as much as digits as its factorization.

13642257302705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2728451460546.

The product of its (nonzero) digits is 2116800, while the sum is 47.

The spelling of 13642257302705 in words is "thirteen trillion, six hundred forty-two billion, two hundred fifty-seven million, three hundred two thousand, seven hundred five".