20885074530 has 64 divisors (see below), whose sum is σ = 51129066240. Its totient is φ = 5457943296.

The previous prime is 20885074523. The next prime is 20885074541. The reversal of 20885074530 is 3547058802.

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, 1454064 + ... + 1468356.

It is an arithmetic number, because the mean of its divisors is an integer number (798891660).

Almost surely, 2^20885074530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20885074530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25564533120).

20885074530 is an abundant number, since it is smaller than the sum of its proper divisors (30243991710).

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

20885074530 is a wasteful number, since it uses less digits than its factorization.

20885074530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15275.

The product of its (nonzero) digits is 268800, while the sum is 42.

The spelling of 20885074530 in words is "twenty billion, eight hundred eighty-five million, seventy-four thousand, five hundred thirty".