5641243578 has 12 divisors (see below), whose sum is σ = 12222694458. Its totient is φ = 1880414520.

The previous prime is 5641243577. The next prime is 5641243639. The reversal of 5641243578 is 8753421465.

5641243578 is a `hidden beast` number, since 5 + 64 + 12 + 4 + 3 + 578 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4463175249 + 1178068329 = 66807^2 + 34323^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5641243577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 156701193 + ... + 156701228.

Almost surely, 2^5641243578 is an apocalyptic number.

5641243578 is an abundant number, since it is smaller than the sum of its proper divisors (6581450880).

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

5641243578 is a wasteful number, since it uses less digits than its factorization.

5641243578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313402429 (or 313402426 counting only the distinct ones).

The product of its digits is 806400, while the sum is 45.

The square root of 5641243578 is about 75108.2124537657. The cubic root of 5641243578 is about 1780.1569084842.

The spelling of 5641243578 in words is "five billion, six hundred forty-one million, two hundred forty-three thousand, five hundred seventy-eight".