20368599552 has 200 divisors, whose sum is σ = 69480883296. Its totient is φ = 5819516928.

The previous prime is 20368599367. The next prime is 20368599553. The reversal of 20368599552 is 25599586302.

20368599552 is a `hidden beast` number, since 2 + 0 + 3 + 6 + 85 + 9 + 9 + 552 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (20368599553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 255223 + ... + 325385.

Almost surely, 2^20368599552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20368599552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34740441648).

20368599552 is an abundant number, since it is smaller than the sum of its proper divisors (49112283744).

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

20368599552 is an frugal number, since it uses more digits than its factorization.

20368599552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70200 (or 70175 counting only the distinct ones).

The product of its (nonzero) digits is 5832000, while the sum is 54.

The spelling of 20368599552 in words is "twenty billion, three hundred sixty-eight million, five hundred ninety-nine thousand, five hundred fifty-two".