1258212044545 has 16 divisors (see below), whose sum is σ = 1595363552640. Its totient is φ = 949966441344.

The previous prime is 1258212044533. The next prime is 1258212044563. The reversal of 1258212044545 is 5454402128521.

It is a cyclic number.

It is not a de Polignac number, because 1258212044545 - 2¹³ = 1258212036353 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25154364 + ... + 25204333.

It is an arithmetic number, because the mean of its divisors is an integer number (99710222040).

Almost surely, 2^{1258212044545} is an apocalyptic number.

It is an amenable number.

1258212044545 is a deficient number, since it is larger than the sum of its proper divisors (337151508095).

1258212044545 is a wasteful number, since it uses less digits than its factorization.

1258212044545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50358984.

The product of its (nonzero) digits is 512000, while the sum is 43.

The spelling of 1258212044545 in words is "one trillion, two hundred fifty-eight billion, two hundred twelve million, forty-four thousand, five hundred forty-five".