15565420200 has 192 divisors, whose sum is σ = 54928627200. Its totient is φ = 3609337600.

The previous prime is 15565420181. The next prime is 15565420207. The reversal of 15565420200 is 202456551.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (15565420207) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 100531 + ... + 203069.

It is an arithmetic number, because the mean of its divisors is an integer number (286086600).

Almost surely, 2^15565420200 is an apocalyptic number.

15565420200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15565420200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27464313600).

15565420200 is an abundant number, since it is smaller than the sum of its proper divisors (39363207000).

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

15565420200 is a wasteful number, since it uses less digits than its factorization.

15565420200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102592 (or 102583 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 15565420200 its reverse (202456551), we get a palindrome (15767876751).

The spelling of 15565420200 in words is "fifteen billion, five hundred sixty-five million, four hundred twenty thousand, two hundred".