1355311040240 has 80 divisors (see below), whose sum is σ = 3181097191392. Its totient is φ = 536965051392.

The previous prime is 1355311040221. The next prime is 1355311040267. The reversal of 1355311040240 is 420401135531.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71184002 + ... + 71203038.

Almost surely, 2^{1355311040240} is an apocalyptic number.

1355311040240 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 1355311040240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1590548595696).

1355311040240 is an abundant number, since it is smaller than the sum of its proper divisors (1825786151152).

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

1355311040240 is a wasteful number, since it uses less digits than its factorization.

1355311040240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27474 (or 27468 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 1355311040240 its reverse (420401135531), we get a palindrome (1775712175771).

The spelling of 1355311040240 in words is "one trillion, three hundred fifty-five billion, three hundred eleven million, forty thousand, two hundred forty".