20465112546 has 48 divisors (see below), whose sum is σ = 46317510720. Its totient is φ = 6518260320.

The previous prime is 20465112527. The next prime is 20465112557. The reversal of 20465112546 is 64521156402.

20465112546 is a `hidden beast` number, since 20 + 46 + 51 + 1 + 2 + 546 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 20465112546.

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 23 ways as a sum of consecutive naturals, for example, 376540 + ... + 427448.

It is an arithmetic number, because the mean of its divisors is an integer number (964948140).

Almost surely, 2^20465112546 is an apocalyptic number.

20465112546 is an abundant number, since it is smaller than the sum of its proper divisors (25852398174).

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

20465112546 is a wasteful number, since it uses less digits than its factorization.

20465112546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51911 (or 51908 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

Adding to 20465112546 its reverse (64521156402), we get a palindrome (84986268948).

The spelling of 20465112546 in words is "twenty billion, four hundred sixty-five million, one hundred twelve thousand, five hundred forty-six".