1259549491201 has 4 divisors (see below), whose sum is σ = 1259553584304. Its totient is φ = 1259545398100.

The previous prime is 1259549491099. The next prime is 1259549491243. The reversal of 1259549491201 is 1021949459521.

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 a cyclic number.

It is not a de Polignac number, because 1259549491201 - 2³¹ = 1257402007553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1259549491301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1543795 + ... + 2214136.

It is an arithmetic number, because the mean of its divisors is an integer number (314888396076).

It is a Proth number, since it is equal to 75075 ⋅ 2²⁴ + 1 and 75075 < 2²⁴.

Almost surely, 2^{1259549491201} is an apocalyptic number.

It is an amenable number.

1259549491201 is a deficient number, since it is larger than the sum of its proper divisors (4093103).

1259549491201 is an equidigital number, since it uses as much as digits as its factorization.

1259549491201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4093102.

The product of its (nonzero) digits is 1166400, while the sum is 52.

The spelling of 1259549491201 in words is "one trillion, two hundred fifty-nine billion, five hundred forty-nine million, four hundred ninety-one thousand, two hundred one".