21537542314130 has 16 divisors (see below), whose sum is σ = 39424653728640. Its totient is φ = 8468999689392.

The previous prime is 21537542314087. The next prime is 21537542314151. The reversal of 21537542314130 is 3141324573512.

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, 18252153914 + ... + 18252155093.

It is an arithmetic number, because the mean of its divisors is an integer number (2464040858040).

Almost surely, 2^{21537542314130} is an apocalyptic number.

21537542314130 is a deficient number, since it is larger than the sum of its proper divisors (17887111414510).

21537542314130 is a wasteful number, since it uses less digits than its factorization.

21537542314130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36504309073.

The product of its (nonzero) digits is 302400, while the sum is 41.

Adding to 21537542314130 its reverse (3141324573512), we get a palindrome (24678866887642).

The spelling of 21537542314130 in words is "twenty-one trillion, five hundred thirty-seven billion, five hundred forty-two million, three hundred fourteen thousand, one hundred thirty".