12573977937521 has 128 divisors (see below), whose sum is σ = 17318011576320. Its totient is φ = 8814035865600.

The previous prime is 12573977937503. The next prime is 12573977937533.

12573977937521 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 12573977937521 - 2⁶ = 12573977937457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12573977937121) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3436450190 + ... + 3436453848.

It is an arithmetic number, because the mean of its divisors is an integer number (135296965440).

Almost surely, 2^{12573977937521} is an apocalyptic number.

12573977937521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12573977937521 is a deficient number, since it is larger than the sum of its proper divisors (4744033638799).

12573977937521 is a wasteful number, since it uses less digits than its factorization.

12573977937521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4255.

The product of its digits is 175032900, while the sum is 68.

The spelling of 12573977937521 in words is "twelve trillion, five hundred seventy-three billion, nine hundred seventy-seven million, nine hundred thirty-seven thousand, five hundred twenty-one".