1347011672440 has 128 divisors (see below), whose sum is σ = 3584016201600. Its totient is φ = 445803724800.

The previous prime is 1347011672407. The next prime is 1347011672441. The reversal of 1347011672440 is 442761107431.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 1347011672393 and 1347011672402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1347011672441) 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, 40071640 + ... + 40105240.

It is an arithmetic number, because the mean of its divisors is an integer number (28000126575).

Almost surely, 2^{1347011672440} is an apocalyptic number.

1347011672440 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 1347011672440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1792008100800).

1347011672440 is an abundant number, since it is smaller than the sum of its proper divisors (2237004529160).

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

1347011672440 is a wasteful number, since it uses less digits than its factorization.

1347011672440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38585 (or 38581 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 40.

Adding to 1347011672440 its reverse (442761107431), we get a palindrome (1789772779871).

The spelling of 1347011672440 in words is "one trillion, three hundred forty-seven billion, eleven million, six hundred seventy-two thousand, four hundred forty".