243155980244 has 6 divisors (see below), whose sum is σ = 425522965434. Its totient is φ = 121577990120.

The previous prime is 243155980157. The next prime is 243155980267. The reversal of 243155980244 is 442089551342.

It can be written as a sum of positive squares in only one way, i.e., 236059939600 + 7096040644 = 485860^2 + 84238^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30394497527 + ... + 30394497534.

It is an arithmetic number, because the mean of its divisors is an integer number (70920494239).

Almost surely, 2^243155980244 is an apocalyptic number.

It is an amenable number.

243155980244 is a deficient number, since it is larger than the sum of its proper divisors (182366985190).

243155980244 is a wasteful number, since it uses less digits than its factorization.

243155980244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60788995065 (or 60788995063 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 47.

The spelling of 243155980244 in words is "two hundred forty-three billion, one hundred fifty-five million, nine hundred eighty thousand, two hundred forty-four".