20473346988520 has 128 divisors (see below), whose sum is σ = 48180523680000. Its totient is φ = 7814931277824.

The previous prime is 20473346988503. The next prime is 20473346988547. The reversal of 20473346988520 is 2588964337402.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1842282484 + ... + 1842293596.

It is an arithmetic number, because the mean of its divisors is an integer number (376410341250).

Almost surely, 2^{20473346988520} is an apocalyptic number.

20473346988520 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 20473346988520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24090261840000).

20473346988520 is an abundant number, since it is smaller than the sum of its proper divisors (27707176691480).

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

20473346988520 is a wasteful number, since it uses less digits than its factorization.

20473346988520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15659 (or 15655 counting only the distinct ones).

The product of its (nonzero) digits is 69672960, while the sum is 61.

The spelling of 20473346988520 in words is "twenty trillion, four hundred seventy-three billion, three hundred forty-six million, nine hundred eighty-eight thousand, five hundred twenty".