12520344541064 has 16 divisors (see below), whose sum is σ = 23477410106700. Its totient is φ = 6259701845952.

The previous prime is 12520344540961. The next prime is 12520344541121. The reversal of 12520344541064 is 46014544302521.

It can be written as a sum of positive squares in 2 ways, for example, as 11875949822500 + 644394718564 = 3446150^2 + 802742^2 .

It is a super-2 number, since 2×12520344541064² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58689947 + ... + 58902890.

Almost surely, 2^{12520344541064} is an apocalyptic number.

It is an amenable number.

12520344541064 is a deficient number, since it is larger than the sum of its proper divisors (10957065565636).

12520344541064 is a wasteful number, since it uses less digits than its factorization.

12520344541064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117606152 (or 117606148 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 41.

Adding to 12520344541064 its reverse (46014544302521), we get a palindrome (58534888843585).

The spelling of 12520344541064 in words is "twelve trillion, five hundred twenty billion, three hundred forty-four million, five hundred forty-one thousand, sixty-four".