20988460606 has 16 divisors (see below), whose sum is σ = 31731786000. Its totient is φ = 10411426368.

The previous prime is 20988460583. The next prime is 20988460657. The reversal of 20988460606 is 60606488902.

It is a super-2 number, since 2×20988460606² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20988460606.

It is a congruent 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, 128920 + ... + 242068.

It is an arithmetic number, because the mean of its divisors is an integer number (1983236625).

Almost surely, 2^20988460606 is an apocalyptic number.

20988460606 is a deficient number, since it is larger than the sum of its proper divisors (10743325394).

20988460606 is a wasteful number, since it uses less digits than its factorization.

20988460606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113883.

The product of its (nonzero) digits is 995328, while the sum is 49.

The spelling of 20988460606 in words is "twenty billion, nine hundred eighty-eight million, four hundred sixty thousand, six hundred six".