1311050553261 has 8 divisors (see below), whose sum is σ = 1804456675584. Its totient is φ = 845839066560.

The previous prime is 1311050553259. The next prime is 1311050553289. The reversal of 1311050553261 is 1623550501131.

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

It is not a de Polignac number, because 1311050553261 - 2¹ = 1311050553259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311050553361) 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, 7048658796 + ... + 7048658981.

It is an arithmetic number, because the mean of its divisors is an integer number (225557084448).

Almost surely, 2^{1311050553261} is an apocalyptic number.

It is an amenable number.

1311050553261 is a deficient number, since it is larger than the sum of its proper divisors (493406122323).

1311050553261 is a wasteful number, since it uses less digits than its factorization.

1311050553261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14097317811.

The product of its (nonzero) digits is 13500, while the sum is 33.

The spelling of 1311050553261 in words is "one trillion, three hundred eleven billion, fifty million, five hundred fifty-three thousand, two hundred sixty-one".