20662012460 has 48 divisors (see below), whose sum is σ = 46317277440. Its totient is φ = 7719526080.

The previous prime is 20662012457. The next prime is 20662012513. The reversal of 20662012460 is 6421026602.

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 in 15 ways as a sum of consecutive naturals, for example, 355934 + ... + 409893.

It is an arithmetic number, because the mean of its divisors is an integer number (964943280).

Almost surely, 2^20662012460 is an apocalyptic number.

20662012460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20662012460 is an abundant number, since it is smaller than the sum of its proper divisors (25655264980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20662012460 is a wasteful number, since it uses less digits than its factorization.

20662012460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765926 (or 765924 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The spelling of 20662012460 in words is "twenty billion, six hundred sixty-two million, twelve thousand, four hundred sixty".