2145122153040 has 40 divisors (see below), whose sum is σ = 6649878675168. Its totient is φ = 572032574080.

The previous prime is 2145122152963. The next prime is 2145122153089. The reversal of 2145122153040 is 403512215412.

It is a tau number, because it is divible by the number of its divisors (40).

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 = 2145122152989 and 2145122153007.

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 7 ways as a sum of consecutive naturals, for example, 4469004246 + ... + 4469004725.

Almost surely, 2^{2145122153040} is an apocalyptic number.

2145122153040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2145122153040 is an abundant number, since it is smaller than the sum of its proper divisors (4504756522128).

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

2145122153040 is a wasteful number, since it uses less digits than its factorization.

2145122153040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8938008987 (or 8938008981 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 2145122153040 its reverse (403512215412), we get a palindrome (2548634368452).

The spelling of 2145122153040 in words is "two trillion, one hundred forty-five billion, one hundred twenty-two million, one hundred fifty-three thousand, forty".