5645640025042 has 4 divisors (see below), whose sum is σ = 8468460037566. Its totient is φ = 2822820012520.

The previous prime is 5645640025007. The next prime is 5645640025093. The reversal of 5645640025042 is 2405200465465.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3410851228801 + 2234788796241 = 1846849^2 + 1494921^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 5645640025042.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1411410006259 + ... + 1411410006262.

Almost surely, 2^{5645640025042} is an apocalyptic number.

5645640025042 is a deficient number, since it is larger than the sum of its proper divisors (2822820012524).

5645640025042 is a wasteful number, since it uses less digits than its factorization.

5645640025042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2822820012523.

The product of its (nonzero) digits is 1152000, while the sum is 43.

The spelling of 5645640025042 in words is "five trillion, six hundred forty-five billion, six hundred forty million, twenty-five thousand, forty-two".