1258812880361 has 4 divisors (see below), whose sum is σ = 1258817403792. Its totient is φ = 1258808356932.

The previous prime is 1258812880349. The next prime is 1258812880373. The reversal of 1258812880361 is 1630882188521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (1258812880349) and next prime (1258812880373).

It is a cyclic number.

It is not a de Polignac number, because 1258812880361 - 2¹⁴ = 1258812863977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1258812882361) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1814855 + ... + 2410668.

It is an arithmetic number, because the mean of its divisors is an integer number (314704350948).

Almost surely, 2^{1258812880361} is an apocalyptic number.

It is an amenable number.

1258812880361 is a deficient number, since it is larger than the sum of its proper divisors (4523431).

1258812880361 is an equidigital number, since it uses as much as digits as its factorization.

1258812880361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4523430.

The product of its (nonzero) digits is 1474560, while the sum is 53.

The spelling of 1258812880361 in words is "one trillion, two hundred fifty-eight billion, eight hundred twelve million, eight hundred eighty thousand, three hundred sixty-one".