2163432135240 has 128 divisors (see below), whose sum is σ = 7259839920000. Its totient is φ = 573043279104.

The previous prime is 2163432135233. The next prime is 2163432135253. The reversal of 2163432135240 is 425312343612.

2163432135240 is a `hidden beast` number, since 2 + 1 + 63 + 4 + 321 + 35 + 240 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2163432135195 and 2163432135204.

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, 6561154 + ... + 6882993.

It is an arithmetic number, because the mean of its divisors is an integer number (56717499375).

Almost surely, 2^{2163432135240} is an apocalyptic number.

2163432135240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2163432135240 is an abundant number, since it is smaller than the sum of its proper divisors (5096407784760).

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

2163432135240 is a wasteful number, since it uses less digits than its factorization.

2163432135240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13444316 (or 13444306 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

Adding to 2163432135240 its reverse (425312343612), we get a palindrome (2588744478852).

The spelling of 2163432135240 in words is "two trillion, one hundred sixty-three billion, four hundred thirty-two million, one hundred thirty-five thousand, two hundred forty".