20465853066 has 64 divisors (see below), whose sum is σ = 45993277440. Its totient is φ = 6745293360.

The previous prime is 20465853041. The next prime is 20465853071. The reversal of 20465853066 is 66035856402.

20465853066 is a `hidden beast` number, since 2 + 0 + 4 + 6 + 58 + 530 + 66 = 666.

It is a super-2 number, since 2×20465853066² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1996831 + ... + 2007053.

It is an arithmetic number, because the mean of its divisors is an integer number (718644960).

Almost surely, 2^20465853066 is an apocalyptic number.

20465853066 is an abundant number, since it is smaller than the sum of its proper divisors (25527424374).

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

20465853066 is a wasteful number, since it uses less digits than its factorization.

20465853066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10648 (or 10642 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 45.

The spelling of 20465853066 in words is "twenty billion, four hundred sixty-five million, eight hundred fifty-three thousand, sixty-six".