20046104561 has 32 divisors (see below), whose sum is σ = 23883939840. Its totient is φ = 16470470016.

The previous prime is 20046104531. The next prime is 20046104587. The reversal of 20046104561 is 16540164002.

It is not a de Polignac number, because 20046104561 - 2²² = 20041910257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20046104501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3297821 + ... + 3303893.

It is an arithmetic number, because the mean of its divisors is an integer number (746373120).

Almost surely, 2^20046104561 is an apocalyptic number.

It is an amenable number.

20046104561 is a deficient number, since it is larger than the sum of its proper divisors (3837835279).

20046104561 is a wasteful number, since it uses less digits than its factorization.

20046104561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6333.

The product of its (nonzero) digits is 5760, while the sum is 29.

Adding to 20046104561 its reverse (16540164002), we get a palindrome (36586268563).

The spelling of 20046104561 in words is "twenty billion, forty-six million, one hundred four thousand, five hundred sixty-one".