20312952920520 has 512 divisors, whose sum is σ = 69803945164800. Its totient is φ = 4684563136512.

The previous prime is 20312952920489. The next prime is 20312952920531. The reversal of 20312952920520 is 2502925921302.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 6413939977 + ... + 6413943143.

It is an arithmetic number, because the mean of its divisors is an integer number (136335830400).

Almost surely, 2^{20312952920520} is an apocalyptic number.

20312952920520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20312952920520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34901972582400).

20312952920520 is an abundant number, since it is smaller than the sum of its proper divisors (49490992244280).

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

20312952920520 is a wasteful number, since it uses less digits than its factorization.

20312952920520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4237 (or 4233 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 42.

The spelling of 20312952920520 in words is "twenty trillion, three hundred twelve billion, nine hundred fifty-two million, nine hundred twenty thousand, five hundred twenty".