15538282650 has 576 divisors, whose sum is σ = 51671692800. Its totient is φ = 3429216000.

The previous prime is 15538282649. The next prime is 15538282663. The reversal of 15538282650 is 5628283551.

15538282650 is a `hidden beast` number, since 1 + 5 + 5 + 382 + 8 + 265 + 0 = 666.

15538282650 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×15538282650² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a zygodrome in base 3.

It is a junction number, because it is equal to n+sod(n) for n = 15538282596 and 15538282605.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 73641045 + ... + 73641255.

It is an arithmetic number, because the mean of its divisors is an integer number (89707800).

Almost surely, 2^15538282650 is an apocalyptic number.

15538282650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 15538282650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25835846400).

15538282650 is an abundant number, since it is smaller than the sum of its proper divisors (36133410150).

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

15538282650 is a wasteful number, since it uses less digits than its factorization.

15538282650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297 (or 280 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 45.

Subtracting from 15538282650 its reverse (5628283551), we obtain a palindrome (9909999099).

The spelling of 15538282650 in words is "fifteen billion, five hundred thirty-eight million, two hundred eighty-two thousand, six hundred fifty".