345072738247 has 2 divisors, whose sum is σ = 345072738248. Its totient is φ = 345072738246.

The previous prime is 345072738221. The next prime is 345072738253. The reversal of 345072738247 is 742837270543.

It is a strong prime.

It is an emirp because it is prime and its reverse (742837270543) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345072738247 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 345072738194 and 345072738203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345072738217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172536369123 + 172536369124.

It is an arithmetic number, because the mean of its divisors is an integer number (172536369124).

Almost surely, 2^345072738247 is an apocalyptic number.

345072738247 is a deficient number, since it is larger than the sum of its proper divisors (1).

345072738247 is an equidigital number, since it uses as much as digits as its factorization.

345072738247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7902720, while the sum is 52.

The spelling of 345072738247 in words is "three hundred forty-five billion, seventy-two million, seven hundred thirty-eight thousand, two hundred forty-seven".