1311550543245 has 16 divisors (see below), whose sum is σ = 2138074849152. Its totient is φ = 686295629760.

The previous prime is 1311550543169. The next prime is 1311550543283. The reversal of 1311550543245 is 5423450551131.

It is not a de Polignac number, because 1311550543245 - 2⁹ = 1311550542733 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 824873761 + ... + 824875350.

It is an arithmetic number, because the mean of its divisors is an integer number (133629678072).

Almost surely, 2^{1311550543245} is an apocalyptic number.

1311550543245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1311550543245 is a deficient number, since it is larger than the sum of its proper divisors (826524305907).

1311550543245 is a wasteful number, since it uses less digits than its factorization.

1311550543245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1649749172.

The product of its (nonzero) digits is 180000, while the sum is 39.

The spelling of 1311550543245 in words is "one trillion, three hundred eleven billion, five hundred fifty million, five hundred forty-three thousand, two hundred forty-five".