243740075007 has 96 divisors (see below), whose sum is σ = 406347911424. Its totient is φ = 128095027200.

The previous prime is 243740074987. The next prime is 243740075023. The reversal of 243740075007 is 700570047342.

243740075007 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 243740075007 - 2²⁰ = 243739026431 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243740075027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 79470288 + ... + 79473354.

It is an arithmetic number, because the mean of its divisors is an integer number (4232790744).

Almost surely, 2^243740075007 is an apocalyptic number.

243740075007 is a deficient number, since it is larger than the sum of its proper divisors (162607836417).

243740075007 is a wasteful number, since it uses less digits than its factorization.

243740075007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3769 (or 3752 counting only the distinct ones).

The product of its (nonzero) digits is 164640, while the sum is 39.

The spelling of 243740075007 in words is "two hundred forty-three billion, seven hundred forty million, seventy-five thousand, seven".