20213125698544 has 80 divisors (see below), whose sum is σ = 43892938886400. Its totient is φ = 8961080896512.

The previous prime is 20213125698529. The next prime is 20213125698551. The reversal of 20213125698544 is 44589652131202.

It is a junction number, because it is equal to n+sod(n) for n = 20213125698491 and 20213125698500.

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, 10000092 + ... + 11850235.

It is an arithmetic number, because the mean of its divisors is an integer number (548661736080).

Almost surely, 2^{20213125698544} is an apocalyptic number.

It is an amenable number.

20213125698544 is an abundant number, since it is smaller than the sum of its proper divisors (23679813187856).

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

20213125698544 is a wasteful number, since it uses less digits than its factorization.

20213125698544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21850550 (or 21850544 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 52.

The spelling of 20213125698544 in words is "twenty trillion, two hundred thirteen billion, one hundred twenty-five million, six hundred ninety-eight thousand, five hundred forty-four".