345404654827 has 4 divisors (see below), whose sum is σ = 351921723840. Its totient is φ = 338887585816.

The previous prime is 345404654717. The next prime is 345404654921. The reversal of 345404654827 is 728456404543.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345404654827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345404654527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3258534427 + ... + 3258534532.

It is an arithmetic number, because the mean of its divisors is an integer number (87980430960).

Almost surely, 2^345404654827 is an apocalyptic number.

345404654827 is a deficient number, since it is larger than the sum of its proper divisors (6517069013).

345404654827 is an equidigital number, since it uses as much as digits as its factorization.

345404654827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6517069012.

The product of its (nonzero) digits is 12902400, while the sum is 52.

The spelling of 345404654827 in words is "three hundred forty-five billion, four hundred four million, six hundred fifty-four thousand, eight hundred twenty-seven".