20604020662 has 4 divisors (see below), whose sum is σ = 30906030996. Its totient is φ = 10302010330.

The previous prime is 20604020639. The next prime is 20604020669. The reversal of 20604020662 is 26602040602.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20604020662.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20604020669) 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, 5151005164 + ... + 5151005167.

It is an arithmetic number, because the mean of its divisors is an integer number (7726507749).

Almost surely, 2^20604020662 is an apocalyptic number.

20604020662 is a deficient number, since it is larger than the sum of its proper divisors (10302010334).

20604020662 is a wasteful number, since it uses less digits than its factorization.

20604020662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10302010333.

The product of its (nonzero) digits is 6912, while the sum is 28.

The spelling of 20604020662 in words is "twenty billion, six hundred four million, twenty thousand, six hundred sixty-two".