345871770205 has 16 divisors (see below), whose sum is σ = 449241663024. Its totient is φ = 254116477440.

The previous prime is 345871770203. The next prime is 345871770247. The reversal of 345871770205 is 502077178543.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 24760281316 + 321111488889 = 157354^2 + 566667^2 .

It is not a de Polignac number, because 345871770205 - 2¹ = 345871770203 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345871770203) 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, 13492536 + ... + 13518145.

It is an arithmetic number, because the mean of its divisors is an integer number (28077603939).

Almost surely, 2^345871770205 is an apocalyptic number.

It is an amenable number.

345871770205 is a deficient number, since it is larger than the sum of its proper divisors (103369892819).

345871770205 is a wasteful number, since it uses less digits than its factorization.

345871770205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27010896.

The product of its (nonzero) digits is 1646400, while the sum is 49.

The spelling of 345871770205 in words is "three hundred forty-five billion, eight hundred seventy-one million, seven hundred seventy thousand, two hundred five".