1331285596740 has 144 divisors (see below), whose sum is σ = 4408797818880. Its totient is φ = 322482954240.

The previous prime is 1331285596717. The next prime is 1331285596789. The reversal of 1331285596740 is 476955821331.

It is a happy number.

1331285596740 is a `hidden beast` number, since 1 + 3 + 3 + 1 + 2 + 8 + 5 + 596 + 7 + 40 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2269572 + ... + 2795268.

It is an arithmetic number, because the mean of its divisors is an integer number (30616651520).

It is a 2-persistent number, because it is pandigital, and so is 2⋅1331285596740 = 2662571193480, but 3⋅1331285596740 = 3993856790220 is not.

Almost surely, 2^{1331285596740} is an apocalyptic number.

1331285596740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1331285596740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2204398909440).

1331285596740 is an abundant number, since it is smaller than the sum of its proper divisors (3077512222140).

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

1331285596740 is a wasteful number, since it uses less digits than its factorization.

1331285596740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527002 (or 526997 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 54.

The spelling of 1331285596740 in words is "one trillion, three hundred thirty-one billion, two hundred eighty-five million, five hundred ninety-six thousand, seven hundred forty".