345871770247 has 2 divisors, whose sum is σ = 345871770248. Its totient is φ = 345871770246.

The previous prime is 345871770203. The next prime is 345871770319. The reversal of 345871770247 is 742077178543.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 345871770247 - 2⁷ = 345871770119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345871770547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172935885123 + 172935885124.

It is an arithmetic number, because the mean of its divisors is an integer number (172935885124).

Almost surely, 2^345871770247 is an apocalyptic number.

345871770247 is a deficient number, since it is larger than the sum of its proper divisors (1).

345871770247 is an equidigital number, since it uses as much as digits as its factorization.

345871770247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9219840, while the sum is 55.

The spelling of 345871770247 in words is "three hundred forty-five billion, eight hundred seventy-one million, seven hundred seventy thousand, two hundred forty-seven".