243117774056045 has 64 divisors (see below), whose sum is σ = 343860303790080. Its totient is φ = 161546083238400.

The previous prime is 243117774055987. The next prime is 243117774056063. The reversal of 243117774056045 is 540650477711342.

It is not a de Polignac number, because 243117774056045 - 2⁸ = 243117774055789 is a prime.

It is a super-2 number, since 2×243117774056045² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 179949014 + ... + 181295016.

It is an arithmetic number, because the mean of its divisors is an integer number (5372817246720).

Almost surely, 2^{243117774056045} is an apocalyptic number.

It is an amenable number.

243117774056045 is a deficient number, since it is larger than the sum of its proper divisors (100742529734035).

243117774056045 is a wasteful number, since it uses less digits than its factorization.

243117774056045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1346906.

The product of its (nonzero) digits is 19756800, while the sum is 56.

The spelling of 243117774056045 in words is "two hundred forty-three trillion, one hundred seventeen billion, seven hundred seventy-four million, fifty-six thousand, forty-five".