20504577360 has 40 divisors (see below), whose sum is σ = 63564190560. Its totient is φ = 5467887232.

The previous prime is 20504577343. The next prime is 20504577389. The reversal of 20504577360 is 6377540502.

It is a tau number, because it is divible by the number of its divisors (40).

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 7 ways as a sum of consecutive naturals, for example, 42717630 + ... + 42718109.

It is an arithmetic number, because the mean of its divisors is an integer number (1589104764).

Almost surely, 2^20504577360 is an apocalyptic number.

20504577360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20504577360 is an abundant number, since it is smaller than the sum of its proper divisors (43059613200).

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

20504577360 is a wasteful number, since it uses less digits than its factorization.

20504577360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85435755 (or 85435749 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 39.

The spelling of 20504577360 in words is "twenty billion, five hundred four million, five hundred seventy-seven thousand, three hundred sixty".