20789475562 has 8 divisors (see below), whose sum is σ = 31200832836. Its totient is φ = 10389197952.

The previous prime is 20789475527. The next prime is 20789475569. The reversal of 20789475562 is 26557498702.

It can be written as a sum of positive squares in 2 ways, for example, as 19875078441 + 914397121 = 140979^2 + 30239^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (20789475569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2765223 + ... + 2772730.

Almost surely, 2^20789475562 is an apocalyptic number.

20789475562 is a deficient number, since it is larger than the sum of its proper divisors (10411357274).

20789475562 is a wasteful number, since it uses less digits than its factorization.

20789475562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5539832.

The product of its (nonzero) digits is 8467200, while the sum is 55.

The spelling of 20789475562 in words is "twenty billion, seven hundred eighty-nine million, four hundred seventy-five thousand, five hundred sixty-two".