345511566523 has 4 divisors (see below), whose sum is σ = 345562079368. Its totient is φ = 345461053680.

The previous prime is 345511566511. The next prime is 345511566557. The reversal of 345511566523 is 325665115543.

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

It is a cyclic number.

It is not a de Polignac number, because 345511566523 - 2²⁵ = 345478012091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345511566563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25246161 + ... + 25259842.

It is an arithmetic number, because the mean of its divisors is an integer number (86390519842).

Almost surely, 2^345511566523 is an apocalyptic number.

345511566523 is a deficient number, since it is larger than the sum of its proper divisors (50512845).

345511566523 is an equidigital number, since it uses as much as digits as its factorization.

345511566523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50512844.

The product of its digits is 1620000, while the sum is 46.

The spelling of 345511566523 in words is "three hundred forty-five billion, five hundred eleven million, five hundred sixty-six thousand, five hundred twenty-three".