13645322061 has 16 divisors (see below), whose sum is σ = 20807228544. Its totient is φ = 7791943104.

The previous prime is 13645322057. The next prime is 13645322081. The reversal of 13645322061 is 16022354631.

It is not a de Polignac number, because 13645322061 - 2² = 13645322057 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13645322081) 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, 193086 + ... + 254111.

It is an arithmetic number, because the mean of its divisors is an integer number (1300451784).

Almost surely, 2^13645322061 is an apocalyptic number.

It is an amenable number.

13645322061 is a deficient number, since it is larger than the sum of its proper divisors (7161906483).

13645322061 is a wasteful number, since it uses less digits than its factorization.

13645322061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448660.

The product of its (nonzero) digits is 25920, while the sum is 33.

Adding to 13645322061 its reverse (16022354631), we get a palindrome (29667676692).

The spelling of 13645322061 in words is "thirteen billion, six hundred forty-five million, three hundred twenty-two thousand, sixty-one".