20595193634 has 4 divisors (see below), whose sum is σ = 30892790454. Its totient is φ = 10297596816.

The previous prime is 20595193631. The next prime is 20595193651. The reversal of 20595193634 is 43639159502.

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., 19741093009 + 854100625 = 140503^2 + 29225^2 .

It is not an unprimeable number, because it can be changed into a prime (20595193631) by changing a digit.

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 as a sum of consecutive naturals, namely, 5148798407 + ... + 5148798410.

Almost surely, 2^20595193634 is an apocalyptic number.

20595193634 is a deficient number, since it is larger than the sum of its proper divisors (10297596820).

20595193634 is a wasteful number, since it uses less digits than its factorization.

20595193634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10297596819.

The product of its (nonzero) digits is 874800, while the sum is 47.

The spelling of 20595193634 in words is "twenty billion, five hundred ninety-five million, one hundred ninety-three thousand, six hundred thirty-four".