20789475342 has 16 divisors (see below), whose sum is σ = 41591563392. Its totient is φ = 6927723000.

The previous prime is 20789475341. The next prime is 20789475349. The reversal of 20789475342 is 24357498702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20789475341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 504034 + ... + 543717.

It is an arithmetic number, because the mean of its divisors is an integer number (2599472712).

Almost surely, 2^20789475342 is an apocalyptic number.

20789475342 is an abundant number, since it is smaller than the sum of its proper divisors (20802088050).

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

20789475342 is a wasteful number, since it uses less digits than its factorization.

20789475342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051063.

The product of its (nonzero) digits is 3386880, while the sum is 51.

The spelling of 20789475342 in words is "twenty billion, seven hundred eighty-nine million, four hundred seventy-five thousand, three hundred forty-two".