1311245432450 has 24 divisors (see below), whose sum is σ = 2475318249552. Its totient is φ = 516669840720.

The previous prime is 1311245432339. The next prime is 1311245432461. The reversal of 1311245432450 is 542345421131.

It is a self number, because there is not a number n which added to its sum of digits gives 1311245432450.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 195704924 + ... + 195711623.

It is an arithmetic number, because the mean of its divisors is an integer number (103138260398).

Almost surely, 2^{1311245432450} is an apocalyptic number.

1311245432450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1311245432450 is a deficient number, since it is larger than the sum of its proper divisors (1164072817102).

1311245432450 is a wasteful number, since it uses less digits than its factorization.

1311245432450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391416626 (or 391416621 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

The spelling of 1311245432450 in words is "one trillion, three hundred eleven billion, two hundred forty-five million, four hundred thirty-two thousand, four hundred fifty".