1311241465554 has 16 divisors (see below), whose sum is σ = 2630861474592. Its totient is φ = 435684064608.

The previous prime is 1311241465531. The next prime is 1311241465559. The reversal of 1311241465554 is 4555641421131.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1311241465559) 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 7 ways as a sum of consecutive naturals, for example, 349103944 + ... + 349107699.

It is an arithmetic number, because the mean of its divisors is an integer number (164428842162).

Almost surely, 2^{1311241465554} is an apocalyptic number.

1311241465554 is an abundant number, since it is smaller than the sum of its proper divisors (1319620009038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1311241465554 is a wasteful number, since it uses less digits than its factorization.

1311241465554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698211961.

The product of its digits is 288000, while the sum is 42.

Adding to 1311241465554 its reverse (4555641421131), we get a palindrome (5866882886685).

The spelling of 1311241465554 in words is "one trillion, three hundred eleven billion, two hundred forty-one million, four hundred sixty-five thousand, five hundred fifty-four".