20630253626340 has 48 divisors (see below), whose sum is σ = 57798236102208. Its totient is φ = 5498208019584.

The previous prime is 20630253626317. The next prime is 20630253626357. The reversal of 20630253626340 is 4362635203602.

It is a happy number.

It is a super-2 number, since 2×20630253626340² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20630253626292 and 20630253626301.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99675367 + ... + 99882126.

It is an arithmetic number, because the mean of its divisors is an integer number (1204129918796).

Almost surely, 2^{20630253626340} is an apocalyptic number.

20630253626340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20630253626340 is an abundant number, since it is smaller than the sum of its proper divisors (37167982475868).

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

20630253626340 is a wasteful number, since it uses less digits than its factorization.

20630253626340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199559228 (or 199559226 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 42.

Adding to 20630253626340 its reverse (4362635203602), we get a palindrome (24992888829942).

The spelling of 20630253626340 in words is "twenty trillion, six hundred thirty billion, two hundred fifty-three million, six hundred twenty-six thousand, three hundred forty".