4243572442661 has 8 divisors (see below), whose sum is σ = 4247848585344. Its totient is φ = 4239297010080.

The previous prime is 4243572442657. The next prime is 4243572442667. The reversal of 4243572442661 is 1662442753424.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4243572442661 - 2² = 4243572442657 is a prime.

It is a super-2 number, since 2×4243572442661² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4243572442667) 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 7 ways as a sum of consecutive naturals, for example, 12214820 + ... + 12557426.

It is an arithmetic number, because the mean of its divisors is an integer number (530981073168).

Almost surely, 2^{4243572442661} is an apocalyptic number.

It is an amenable number.

4243572442661 is a deficient number, since it is larger than the sum of its proper divisors (4276142683).

4243572442661 is a wasteful number, since it uses less digits than its factorization.

4243572442661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355051.

The product of its digits is 7741440, while the sum is 50.

The spelling of 4243572442661 in words is "four trillion, two hundred forty-three billion, five hundred seventy-two million, four hundred forty-two thousand, six hundred sixty-one".