20312626430550 has 48 divisors (see below), whose sum is σ = 50387664983040. Its totient is φ = 5415372270240.

The previous prime is 20312626430543. The next prime is 20312626430557. The reversal of 20312626430550 is 5503462621302.

It is an interprime number because it is at equal distance from previous prime (20312626430543) and next prime (20312626430557).

It is a junction number, because it is equal to n+sod(n) for n = 20312626430499 and 20312626430508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20312626430557) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15987502 + ... + 17211201.

It is an arithmetic number, because the mean of its divisors is an integer number (1049743020480).

Almost surely, 2^{20312626430550} is an apocalyptic number.

20312626430550 is an abundant number, since it is smaller than the sum of its proper divisors (30075038552490).

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

20312626430550 is a wasteful number, since it uses less digits than its factorization.

20312626430550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33202797 (or 33202792 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 39.

The spelling of 20312626430550 in words is "twenty trillion, three hundred twelve billion, six hundred twenty-six million, four hundred thirty thousand, five hundred fifty".