523555455113240 has 128 divisors (see below), whose sum is σ = 1296662463360000. Its totient is φ = 188675282342400.

The previous prime is 523555455113233. The next prime is 523555455113303. The reversal of 523555455113240 is 42311554555325.

It is a super-2 number, since 2×523555455113240² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19685285 + ... + 37876395.

It is an arithmetic number, because the mean of its divisors is an integer number (10130175495000).

Almost surely, 2^{523555455113240} 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 523555455113240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (648331231680000).

523555455113240 is an abundant number, since it is smaller than the sum of its proper divisors (773107008246760).

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

523555455113240 is a wasteful number, since it uses less digits than its factorization.

523555455113240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18191721 (or 18191717 counting only the distinct ones).

The product of its (nonzero) digits is 9000000, while the sum is 50.

The spelling of 523555455113240 in words is "five hundred twenty-three trillion, five hundred fifty-five billion, four hundred fifty-five million, one hundred thirteen thousand, two hundred forty".