20146120461 has 24 divisors (see below), whose sum is σ = 30271644000. Its totient is φ = 12895143072.

The previous prime is 20146120459. The next prime is 20146120483. The reversal of 20146120461 is 16402164102.

20146120461 is a `hidden beast` number, since 2 + 0 + 1 + 4 + 612 + 0 + 46 + 1 = 666.

It is not a de Polignac number, because 20146120461 - 2¹ = 20146120459 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20146170461) by changing a digit.

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, 168891 + ... + 262328.

It is an arithmetic number, because the mean of its divisors is an integer number (1261318500).

Almost surely, 2^20146120461 is an apocalyptic number.

It is an amenable number.

20146120461 is a deficient number, since it is larger than the sum of its proper divisors (10125523539).

20146120461 is a wasteful number, since it uses less digits than its factorization.

20146120461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431433 (or 431430 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 20146120461 its reverse (16402164102), we get a palindrome (36548284563).

The spelling of 20146120461 in words is "twenty billion, one hundred forty-six million, one hundred twenty thousand, four hundred sixty-one".