20523470046 has 16 divisors (see below), whose sum is σ = 43207305600. Its totient is φ = 6481095768.

The previous prime is 20523470029. The next prime is 20523470053. The reversal of 20523470046 is 64007432502.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20523469989 and 20523470016.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90015106 + ... + 90015333.

It is an arithmetic number, because the mean of its divisors is an integer number (2700456600).

Almost surely, 2^20523470046 is an apocalyptic number.

20523470046 is an abundant number, since it is smaller than the sum of its proper divisors (22683835554).

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

20523470046 is a wasteful number, since it uses less digits than its factorization.

20523470046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180030463.

The product of its (nonzero) digits is 40320, while the sum is 33.

The spelling of 20523470046 in words is "twenty billion, five hundred twenty-three million, four hundred seventy thousand, forty-six".