2103512505240 has 256 divisors, whose sum is σ = 6716337264000. Its totient is φ = 525214679040.

The previous prime is 2103512505233. The next prime is 2103512505349. The reversal of 2103512505240 is 425052153012.

It is a super-2 number, since 2×2103512505240² (a number of 25 digits) contains 22 as substring.

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 = 2103512505198 and 2103512505207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 324562800 + ... + 324569280.

Almost surely, 2^{2103512505240} is an apocalyptic number.

2103512505240 is a gapful number since it is divisible by the number (20) 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 2103512505240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3358168632000).

2103512505240 is an abundant number, since it is smaller than the sum of its proper divisors (4612824758760).

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

2103512505240 is a wasteful number, since it uses less digits than its factorization.

2103512505240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7310 (or 7306 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 2103512505240 its reverse (425052153012), we get a palindrome (2528564658252).

The spelling of 2103512505240 in words is "two trillion, one hundred three billion, five hundred twelve million, five hundred five thousand, two hundred forty".