20596811594 has 4 divisors (see below), whose sum is σ = 30895217394. Its totient is φ = 10298405796.

The previous prime is 20596811593. The next prime is 20596811657. The reversal of 20596811594 is 49511869502.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 13718265625 + 6878545969 = 117125^2 + 82937^2 .

It is not an unprimeable number, because it can be changed into a prime (20596811593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5149202897 + ... + 5149202900.

Almost surely, 2^20596811594 is an apocalyptic number.

20596811594 is a deficient number, since it is larger than the sum of its proper divisors (10298405800).

20596811594 is a wasteful number, since it uses less digits than its factorization.

20596811594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10298405799.

The product of its (nonzero) digits is 777600, while the sum is 50.

The spelling of 20596811594 in words is "twenty billion, five hundred ninety-six million, eight hundred eleven thousand, five hundred ninety-four".