12545720458 has 16 divisors (see below), whose sum is σ = 18882802944. Its totient is φ = 6251472640.

The previous prime is 12545720449. The next prime is 12545720521. The reversal of 12545720458 is 85402754521.

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, 1794666 + ... + 1801642.

It is an arithmetic number, because the mean of its divisors is an integer number (1180175184).

Almost surely, 2^12545720458 is an apocalyptic number.

12545720458 is a deficient number, since it is larger than the sum of its proper divisors (6337082486).

12545720458 is a wasteful number, since it uses less digits than its factorization.

12545720458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9917.

The product of its (nonzero) digits is 448000, while the sum is 43.

The spelling of 12545720458 in words is "twelve billion, five hundred forty-five million, seven hundred twenty thousand, four hundred fifty-eight".