20213769570 has 64 divisors (see below), whose sum is σ = 50179094784. Its totient is φ = 5207777280.

The previous prime is 20213769557. The next prime is 20213769599. The reversal of 20213769570 is 7596731202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46914 + ... + 206466.

It is an arithmetic number, because the mean of its divisors is an integer number (784048356).

Almost surely, 2^20213769570 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20213769570, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25089547392).

20213769570 is an abundant number, since it is smaller than the sum of its proper divisors (29965325214).

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

20213769570 is a wasteful number, since it uses less digits than its factorization.

20213769570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159707.

The product of its (nonzero) digits is 158760, while the sum is 42.

The spelling of 20213769570 in words is "twenty billion, two hundred thirteen million, seven hundred sixty-nine thousand, five hundred seventy".