20026242704261 has 8 divisors (see below), whose sum is σ = 20085905402784. Its totient is φ = 19966668725520.

The previous prime is 20026242704191. The next prime is 20026242704263. The reversal of 20026242704261 is 16240724262002.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20026242704261 is a prime.

It is a super-2 number, since 2×20026242704261² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20026242704263) 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, 21727811 + ... + 22630736.

It is an arithmetic number, because the mean of its divisors is an integer number (2510738175348).

Almost surely, 2^{20026242704261} is an apocalyptic number.

It is an amenable number.

20026242704261 is a deficient number, since it is larger than the sum of its proper divisors (59662698523).

20026242704261 is an equidigital number, since it uses as much as digits as its factorization.

20026242704261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44359891.

The product of its (nonzero) digits is 129024, while the sum is 38.

Adding to 20026242704261 its reverse (16240724262002), we get a palindrome (36266966966263).

The spelling of 20026242704261 in words is "twenty trillion, twenty-six billion, two hundred forty-two million, seven hundred four thousand, two hundred sixty-one".