1205249845901 has 8 divisors (see below), whose sum is σ = 1210648723200. Its totient is φ = 1199862980800.

The previous prime is 1205249845889. The next prime is 1205249845907. The reversal of 1205249845901 is 1095489425021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1205249845901 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1205249845901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1205249845907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2801900 + ... + 3203301.

It is an arithmetic number, because the mean of its divisors is an integer number (151331090400).

Almost surely, 2^{1205249845901} is an apocalyptic number.

It is an amenable number.

1205249845901 is a deficient number, since it is larger than the sum of its proper divisors (5398877299).

1205249845901 is an equidigital number, since it uses as much as digits as its factorization.

1205249845901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6006099.

The product of its (nonzero) digits is 1036800, while the sum is 50.

The spelling of 1205249845901 in words is "one trillion, two hundred five billion, two hundred forty-nine million, eight hundred forty-five thousand, nine hundred one".