1258143897985 has 32 divisors (see below), whose sum is σ = 1632887101440. Its totient is φ = 925111991808.

The previous prime is 1258143897949. The next prime is 1258143897991. The reversal of 1258143897985 is 5897983418521.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1258143897985 is a prime.

It is a Smith number, since the sum of its digits (70) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14184484 + ... + 14272906.

It is an arithmetic number, because the mean of its divisors is an integer number (51027721920).

Almost surely, 2^{1258143897985} is an apocalyptic number.

It is an amenable number.

1258143897985 is a deficient number, since it is larger than the sum of its proper divisors (374743203455).

1258143897985 is a wasteful number, since it uses less digits than its factorization.

1258143897985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89377.

The product of its digits is 174182400, while the sum is 70.

The spelling of 1258143897985 in words is "one trillion, two hundred fifty-eight billion, one hundred forty-three million, eight hundred ninety-seven thousand, nine hundred eighty-five".