12521032436545 has 16 divisors (see below), whose sum is σ = 15371400481920. Its totient is φ = 9788084833024.

The previous prime is 12521032436519. The next prime is 12521032436567. The reversal of 12521032436545 is 54563423012521.

It is a cyclic number.

It is not a de Polignac number, because 12521032436545 - 2¹¹ = 12521032434497 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127029112 + ... + 127127641.

It is an arithmetic number, because the mean of its divisors is an integer number (960712530120).

Almost surely, 2^{12521032436545} is an apocalyptic number.

It is an amenable number.

12521032436545 is a deficient number, since it is larger than the sum of its proper divisors (2850368045375).

12521032436545 is a wasteful number, since it uses less digits than its factorization.

12521032436545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254156984.

The product of its (nonzero) digits is 864000, while the sum is 43.

The spelling of 12521032436545 in words is "twelve trillion, five hundred twenty-one billion, thirty-two million, four hundred thirty-six thousand, five hundred forty-five".