2145425202040 has 128 divisors (see below), whose sum is σ = 4974540480000. Its totient is φ = 832140062208.

The previous prime is 2145425202031. The next prime is 2145425202059. The reversal of 2145425202040 is 402025245412.

It is a junction number, because it is equal to n+sod(n) for n = 2145425201993 and 2145425202011.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 917239191 + ... + 917241529.

It is an arithmetic number, because the mean of its divisors is an integer number (38863597500).

Almost surely, 2^{2145425202040} is an apocalyptic number.

2145425202040 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 2145425202040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2487270240000).

2145425202040 is an abundant number, since it is smaller than the sum of its proper divisors (2829115277960).

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

2145425202040 is a wasteful number, since it uses less digits than its factorization.

2145425202040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4229 (or 4225 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 31.

The spelling of 2145425202040 in words is "two trillion, one hundred forty-five billion, four hundred twenty-five million, two hundred two thousand, forty".