20604202642 has 8 divisors (see below), whose sum is σ = 32532951600. Its totient is φ = 9759885444.

The previous prime is 20604202639. The next prime is 20604202687. The reversal of 20604202642 is 24620240602.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20604202642.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 271107892 + ... + 271107967.

It is an arithmetic number, because the mean of its divisors is an integer number (4066618950).

Almost surely, 2^20604202642 is an apocalyptic number.

20604202642 is a deficient number, since it is larger than the sum of its proper divisors (11928748958).

20604202642 is a wasteful number, since it uses less digits than its factorization.

20604202642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542215880.

The product of its (nonzero) digits is 9216, while the sum is 28.

The spelling of 20604202642 in words is "twenty billion, six hundred four million, two hundred two thousand, six hundred forty-two".