243101653646431 has 4 divisors (see below), whose sum is σ = 245461863876112. Its totient is φ = 240741443416752.

The previous prime is 243101653646407. The next prime is 243101653646483. The reversal of 243101653646431 is 134646356101342.

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

It is a cyclic number.

It is not a de Polignac number, because 243101653646431 - 2⁴⁷ = 102364165291103 is a prime.

It is a super-2 number, since 2×243101653646431² (a number of 30 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 (243101653646531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1180105114686 + ... + 1180105114891.

It is an arithmetic number, because the mean of its divisors is an integer number (61365465969028).

Almost surely, 2^{243101653646431} is an apocalyptic number.

243101653646431 is a deficient number, since it is larger than the sum of its proper divisors (2360210229681).

243101653646431 is a wasteful number, since it uses less digits than its factorization.

243101653646431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2360210229680.

The product of its (nonzero) digits is 3732480, while the sum is 49.

The spelling of 243101653646431 in words is "two hundred forty-three trillion, one hundred one billion, six hundred fifty-three million, six hundred forty-six thousand, four hundred thirty-one".