20261251426 has 16 divisors (see below), whose sum is σ = 34452331200. Its totient is φ = 8859170448.

The previous prime is 20261251421. The next prime is 20261251427. The reversal of 20261251426 is 62415216202.

20261251426 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (20261251421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20506846 + ... + 20507833.

It is an arithmetic number, because the mean of its divisors is an integer number (2153270700).

Almost surely, 2^20261251426 is an apocalyptic number.

20261251426 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20261251426 is a deficient number, since it is larger than the sum of its proper divisors (14191079774).

20261251426 is a wasteful number, since it uses less digits than its factorization.

20261251426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41014713.

The product of its (nonzero) digits is 11520, while the sum is 31.

Adding to 20261251426 its reverse (62415216202), we get a palindrome (82676467628).

The spelling of 20261251426 in words is "twenty billion, two hundred sixty-one million, two hundred fifty-one thousand, four hundred twenty-six".