20602206406 has 8 divisors (see below), whose sum is σ = 31364553240. Its totient is φ = 10147355328.

The previous prime is 20602206389. The next prime is 20602206409. The reversal of 20602206406 is 60460220602.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20602206409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76873771 + ... + 76874038.

It is an arithmetic number, because the mean of its divisors is an integer number (3920569155).

Almost surely, 2^20602206406 is an apocalyptic number.

20602206406 is a deficient number, since it is larger than the sum of its proper divisors (10762346834).

20602206406 is a wasteful number, since it uses less digits than its factorization.

20602206406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153747878.

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

The spelling of 20602206406 in words is "twenty billion, six hundred two million, two hundred six thousand, four hundred six".