20305545242601 has 8 divisors (see below), whose sum is σ = 27947417108224. Its totient is φ = 13100351769360.

The previous prime is 20305545242597. The next prime is 20305545242629. The reversal of 20305545242601 is 10624254550302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20305545242601 - 2² = 20305545242597 is a prime.

It is a super-2 number, since 2×20305545242601² (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 20305545242601.

It is not an unprimeable number, because it can be changed into a prime (20305545249601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109169597986 + ... + 109169598171.

It is an arithmetic number, because the mean of its divisors is an integer number (3493427138528).

Almost surely, 2^{20305545242601} is an apocalyptic number.

It is an amenable number.

20305545242601 is a deficient number, since it is larger than the sum of its proper divisors (7641871865623).

20305545242601 is a wasteful number, since it uses less digits than its factorization.

20305545242601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218339196191.

The product of its (nonzero) digits is 288000, while the sum is 39.

Adding to 20305545242601 its reverse (10624254550302), we get a palindrome (30929799792903).

The spelling of 20305545242601 in words is "twenty trillion, three hundred five billion, five hundred forty-five million, two hundred forty-two thousand, six hundred one".