20426613325552 has 20 divisors (see below), whose sum is σ = 45230358078256. Its totient is φ = 8754262853760.

The previous prime is 20426613325523. The next prime is 20426613325553. The reversal of 20426613325552 is 25552331662402.

It is a super-2 number, since 2×20426613325552² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20426613325553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91190237949 + ... + 91190238172.

Almost surely, 2^{20426613325552} is an apocalyptic number.

It is an amenable number.

20426613325552 is an abundant number, since it is smaller than the sum of its proper divisors (24803744752704).

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

20426613325552 is a wasteful number, since it uses less digits than its factorization.

20426613325552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182380476136 (or 182380476130 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 46.

Adding to 20426613325552 its reverse (25552331662402), we get a palindrome (45978944987954).

The spelling of 20426613325552 in words is "twenty trillion, four hundred twenty-six billion, six hundred thirteen million, three hundred twenty-five thousand, five hundred fifty-two".