21500524351130 has 16 divisors (see below), whose sum is σ = 42219211453344. Its totient is φ = 7818372491280.

The previous prime is 21500524351091. The next prime is 21500524351183. The reversal of 21500524351130 is 3115342500512.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97729656032 + ... + 97729656251.

It is an arithmetic number, because the mean of its divisors is an integer number (2638700715834).

Almost surely, 2^{21500524351130} is an apocalyptic number.

21500524351130 is a deficient number, since it is larger than the sum of its proper divisors (20718687102214).

21500524351130 is a wasteful number, since it uses less digits than its factorization.

21500524351130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195459312301.

The product of its (nonzero) digits is 18000, while the sum is 32.

Adding to 21500524351130 its reverse (3115342500512), we get a palindrome (24615866851642).

The spelling of 21500524351130 in words is "twenty-one trillion, five hundred billion, five hundred twenty-four million, three hundred fifty-one thousand, one hundred thirty".