1208312489640 has 32 divisors (see below), whose sum is σ = 3624937469280. Its totient is φ = 322216663872.

The previous prime is 1208312489639. The next prime is 1208312489669. The reversal of 1208312489640 is 469842138021.

It is a self number, because there is not a number n which added to its sum of digits gives 1208312489640.

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 7 ways as a sum of consecutive naturals, for example, 5034635254 + ... + 5034635493.

It is an arithmetic number, because the mean of its divisors is an integer number (113279295915).

Almost surely, 2^{1208312489640} is an apocalyptic number.

1208312489640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1208312489640 is an abundant number, since it is smaller than the sum of its proper divisors (2416624979640).

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

1208312489640 is a wasteful number, since it uses less digits than its factorization.

1208312489640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10069270761 (or 10069270757 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 48.

The spelling of 1208312489640 in words is "one trillion, two hundred eight billion, three hundred twelve million, four hundred eighty-nine thousand, six hundred forty".