20520452176 has 20 divisors (see below), whose sum is σ = 45438144352. Its totient is φ = 8794479456.

The previous prime is 20520452167. The next prime is 20520452207. The reversal of 20520452176 is 67125402502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91609050 + ... + 91609273.

Almost surely, 2^20520452176 is an apocalyptic number.

It is an amenable number.

20520452176 is an abundant number, since it is smaller than the sum of its proper divisors (24917692176).

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

20520452176 is a wasteful number, since it uses less digits than its factorization.

20520452176 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183218338 (or 183218332 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 34.

Adding to 20520452176 its reverse (67125402502), we get a palindrome (87645854678).

The spelling of 20520452176 in words is "twenty billion, five hundred twenty million, four hundred fifty-two thousand, one hundred seventy-six".