1340550004440 has 128 divisors (see below), whose sum is σ = 4108205122560. Its totient is φ = 349789876224.

The previous prime is 1340550004433. The next prime is 1340550004447. The reversal of 1340550004440 is 444000550431.

It is an interprime number because it is at equal distance from previous prime (1340550004433) and next prime (1340550004447).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1340550004398 and 1340550004407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340550004447) 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, 25426987 + ... + 25479653.

It is an arithmetic number, because the mean of its divisors is an integer number (32095352520).

Almost surely, 2^{1340550004440} is an apocalyptic number.

1340550004440 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 1340550004440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2054102561280).

1340550004440 is an abundant number, since it is smaller than the sum of its proper divisors (2767655118120).

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

1340550004440 is a wasteful number, since it uses less digits than its factorization.

1340550004440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57241 (or 57237 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 1340550004440 its reverse (444000550431), we get a palindrome (1784550554871).

The spelling of 1340550004440 in words is "one trillion, three hundred forty billion, five hundred fifty million, four thousand, four hundred forty".