2145520634144 has 24 divisors (see below), whose sum is σ = 4287038435568. Its totient is φ = 1056748968000.

The previous prime is 2145520634123. The next prime is 2145520634161. The reversal of 2145520634144 is 4414360255412.

It is a super-2 number, since 2×2145520634144² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 500352482 + ... + 500356769.

It is an arithmetic number, because the mean of its divisors is an integer number (178626601482).

Almost surely, 2^{2145520634144} is an apocalyptic number.

It is an amenable number.

2145520634144 is a deficient number, since it is larger than the sum of its proper divisors (2141517801424).

2145520634144 is a wasteful number, since it uses less digits than its factorization.

2145520634144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000709328 (or 1000709320 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 41.

Adding to 2145520634144 its reverse (4414360255412), we get a palindrome (6559880889556).

The spelling of 2145520634144 in words is "two trillion, one hundred forty-five billion, five hundred twenty million, six hundred thirty-four thousand, one hundred forty-four".