20261420240568 has 64 divisors (see below), whose sum is σ = 54876624284160. Its totient is φ = 6196952098176.

The previous prime is 20261420240519. The next prime is 20261420240569. The reversal of 20261420240568 is 86504202416202.

It is a super-3 number, since 3×20261420240568³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20261420240569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 194380380 + ... + 194484587.

It is an arithmetic number, because the mean of its divisors is an integer number (857447254440).

Almost surely, 2^{20261420240568} is an apocalyptic number.

It is an amenable number.

20261420240568 is an abundant number, since it is smaller than the sum of its proper divisors (34615204043592).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20261420240568 is a wasteful number, since it uses less digits than its factorization.

20261420240568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388865156 (or 388865152 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 42.

The spelling of 20261420240568 in words is "twenty trillion, two hundred sixty-one billion, four hundred twenty million, two hundred forty thousand, five hundred sixty-eight".