20310145436220 has 48 divisors (see below), whose sum is σ = 56872299179808. Its totient is φ = 5415668120320.

The previous prime is 20310145436201. The next prime is 20310145436233. The reversal of 20310145436220 is 2263454101302.

20310145436220 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 10698639 + ... + 12453158.

It is an arithmetic number, because the mean of its divisors is an integer number (1184839566246).

Almost surely, 2^{20310145436220} is an apocalyptic number.

20310145436220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20310145436220 is an abundant number, since it is smaller than the sum of its proper divisors (36562153743588).

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

20310145436220 is a wasteful number, since it uses less digits than its factorization.

20310145436220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23166430 (or 23166428 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 33.

Adding to 20310145436220 its reverse (2263454101302), we get a palindrome (22573599537522).

The spelling of 20310145436220 in words is "twenty trillion, three hundred ten billion, one hundred forty-five million, four hundred thirty-six thousand, two hundred twenty".