243734517453 has 32 divisors (see below), whose sum is σ = 374477241600. Its totient is φ = 138126735360.

The previous prime is 243734517449. The next prime is 243734517479. The reversal of 243734517453 is 354715437342.

It is not a de Polignac number, because 243734517453 - 2² = 243734517449 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243734517853) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2977593 + ... + 3058353.

It is an arithmetic number, because the mean of its divisors is an integer number (11702413800).

Almost surely, 2^243734517453 is an apocalyptic number.

It is an amenable number.

243734517453 is a deficient number, since it is larger than the sum of its proper divisors (130742724147).

243734517453 is a wasteful number, since it uses less digits than its factorization.

243734517453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81957.

The product of its digits is 4233600, while the sum is 48.

The spelling of 243734517453 in words is "two hundred forty-three billion, seven hundred thirty-four million, five hundred seventeen thousand, four hundred fifty-three".