345404637745 has 4 divisors (see below), whose sum is σ = 414485565300. Its totient is φ = 276323710192.

The previous prime is 345404637731. The next prime is 345404637757. The reversal of 345404637745 is 547736404543.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 229184327824 + 116220309921 = 478732^2 + 340911^2 .

It is a cyclic number.

It is not a de Polignac number, because 345404637745 - 2¹⁷ = 345404506673 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 345404637692 and 345404637701.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34540463770 + ... + 34540463779.

It is an arithmetic number, because the mean of its divisors is an integer number (103621391325).

Almost surely, 2^345404637745 is an apocalyptic number.

It is an amenable number.

345404637745 is a deficient number, since it is larger than the sum of its proper divisors (69080927555).

345404637745 is an equidigital number, since it uses as much as digits as its factorization.

345404637745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69080927554.

The product of its (nonzero) digits is 16934400, while the sum is 52.

The spelling of 345404637745 in words is "three hundred forty-five billion, four hundred four million, six hundred thirty-seven thousand, seven hundred forty-five".