243122049969 has 16 divisors (see below), whose sum is σ = 344667260160. Its totient is φ = 151908888320.

The previous prime is 243122049967. The next prime is 243122049979. The reversal of 243122049969 is 969940221342.

It is not a de Polignac number, because 243122049969 - 2¹ = 243122049967 is a prime.

It is a super-2 number, since 2×243122049969² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (243122049967) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9960822 + ... + 9985199.

It is an arithmetic number, because the mean of its divisors is an integer number (21541703760).

Almost surely, 2^243122049969 is an apocalyptic number.

It is an amenable number.

243122049969 is a deficient number, since it is larger than the sum of its proper divisors (101545210191).

243122049969 is a wasteful number, since it uses less digits than its factorization.

243122049969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19946280.

The product of its (nonzero) digits is 1679616, while the sum is 51.

The spelling of 243122049969 in words is "two hundred forty-three billion, one hundred twenty-two million, forty-nine thousand, nine hundred sixty-nine".