1258774109459 has 4 divisors (see below), whose sum is σ = 1266791779104. Its totient is φ = 1250756439816.

The previous prime is 1258774109431. The next prime is 1258774109497. The reversal of 1258774109459 is 9549014778521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1258774109459 - 2¹² = 1258774105363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1258774109419) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4008834587 + ... + 4008834900.

It is an arithmetic number, because the mean of its divisors is an integer number (316697944776).

Almost surely, 2^{1258774109459} is an apocalyptic number.

1258774109459 is a deficient number, since it is larger than the sum of its proper divisors (8017669645).

1258774109459 is an equidigital number, since it uses as much as digits as its factorization.

1258774109459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8017669644.

The product of its (nonzero) digits is 25401600, while the sum is 62.

The spelling of 1258774109459 in words is "one trillion, two hundred fifty-eight billion, seven hundred seventy-four million, one hundred nine thousand, four hundred fifty-nine".