20542467423570 has 128 divisors (see below), whose sum is σ = 51403957862400. Its totient is φ = 5248000800000.

The previous prime is 20542467423551. The next prime is 20542467423593. The reversal of 20542467423570 is 7532476424502.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 859541481 + ... + 859565379.

It is an arithmetic number, because the mean of its divisors is an integer number (401593420800).

Almost surely, 2^{20542467423570} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20542467423570, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25701978931200).

20542467423570 is an abundant number, since it is smaller than the sum of its proper divisors (30861490438830).

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

20542467423570 is a wasteful number, since it uses less digits than its factorization.

20542467423570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33192.

The product of its (nonzero) digits is 11289600, while the sum is 51.

The spelling of 20542467423570 in words is "twenty trillion, five hundred forty-two billion, four hundred sixty-seven million, four hundred twenty-three thousand, five hundred seventy".