243929514661 has 8 divisors (see below), whose sum is σ = 279603821120. Its totient is φ = 208462016448.

The previous prime is 243929514601. The next prime is 243929514667. The reversal of 243929514661 is 166415929342.

It is a happy number.

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

It is not a de Polignac number, because 243929514661 - 2⁷ = 243929514533 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243929514599 and 243929514608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243929514667) 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, 51699531 + ... + 51704248.

It is an arithmetic number, because the mean of its divisors is an integer number (34950477640).

Almost surely, 2^243929514661 is an apocalyptic number.

It is an amenable number.

243929514661 is a deficient number, since it is larger than the sum of its proper divisors (35674306459).

243929514661 is a wasteful number, since it uses less digits than its factorization.

243929514661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103404123.

The product of its digits is 2799360, while the sum is 52.

The spelling of 243929514661 in words is "two hundred forty-three billion, nine hundred twenty-nine million, five hundred fourteen thousand, six hundred sixty-one".