20606204624 has 10 divisors (see below), whose sum is σ = 39924521490. Its totient is φ = 10303102304.

The previous prime is 20606204573. The next prime is 20606204639. The reversal of 20606204624 is 42640260602.

It can be written as a sum of positive squares in only one way, i.e., 17283835024 + 3322369600 = 131468^2 + 57640^2 .

It is a congruent number.

It is an unprimeable number.

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, 643943879 + ... + 643943910.

It is an arithmetic number, because the mean of its divisors is an integer number (3992452149).

Almost surely, 2^20606204624 is an apocalyptic number.

It is an amenable number.

20606204624 is a deficient number, since it is larger than the sum of its proper divisors (19318316866).

20606204624 is a wasteful number, since it uses less digits than its factorization.

20606204624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1287887797 (or 1287887791 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

The spelling of 20606204624 in words is "twenty billion, six hundred six million, two hundred four thousand, six hundred twenty-four".