12550621445 has 16 divisors (see below), whose sum is σ = 15471751680. Its totient is φ = 9766632384.

The previous prime is 12550621427. The next prime is 12550621451. The reversal of 12550621445 is 54412605521.

It is a cyclic number.

It is not a de Polignac number, because 12550621445 - 2¹⁴ = 12550605061 is a prime.

It is a congruent number.

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, 1093004 + ... + 1104426.

It is an arithmetic number, because the mean of its divisors is an integer number (966984480).

Almost surely, 2^12550621445 is an apocalyptic number.

It is an amenable number.

12550621445 is a deficient number, since it is larger than the sum of its proper divisors (2921130235).

12550621445 is a wasteful number, since it uses less digits than its factorization.

12550621445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17404.

The product of its (nonzero) digits is 48000, while the sum is 35.

The spelling of 12550621445 in words is "twelve billion, five hundred fifty million, six hundred twenty-one thousand, four hundred forty-five".