20632204394 has 16 divisors (see below), whose sum is σ = 32935144968. Its totient is φ = 9659983872.

The previous prime is 20632204387. The next prime is 20632204409. The reversal of 20632204394 is 49340223602.

It can be written as a sum of positive squares in 4 ways, for example, as 20504808025 + 127396369 = 143195^2 + 11287^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1533479 + ... + 1546874.

Almost surely, 2^20632204394 is an apocalyptic number.

20632204394 is a deficient number, since it is larger than the sum of its proper divisors (12302940574).

20632204394 is a wasteful number, since it uses less digits than its factorization.

20632204394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3080569.

The product of its (nonzero) digits is 62208, while the sum is 35.

Adding to 20632204394 its reverse (49340223602), we get a palindrome (69972427996).

The spelling of 20632204394 in words is "twenty billion, six hundred thirty-two million, two hundred four thousand, three hundred ninety-four".