1331089266472 has 128 divisors (see below), whose sum is σ = 3029637219840. Its totient is φ = 535220674560.

The previous prime is 1331089266449. The next prime is 1331089266473. The reversal of 1331089266472 is 2746629801331.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1331089266473) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 720675453 + ... + 720677299.

It is an arithmetic number, because the mean of its divisors is an integer number (23669040780).

Almost surely, 2^{1331089266472} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1331089266472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1514818609920).

1331089266472 is an abundant number, since it is smaller than the sum of its proper divisors (1698547953368).

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

1331089266472 is a wasteful number, since it uses less digits than its factorization.

1331089266472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3851 (or 3847 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 52.

The spelling of 1331089266472 in words is "one trillion, three hundred thirty-one billion, eighty-nine million, two hundred sixty-six thousand, four hundred seventy-two".