345209346129 has 32 divisors (see below), whose sum is σ = 477328785408. Its totient is φ = 221685984000.

The previous prime is 345209346121. The next prime is 345209346133. The reversal of 345209346129 is 921643902543.

It is not a de Polignac number, because 345209346129 - 2³ = 345209346121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (345209346121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17747049 + ... + 17766489.

It is an arithmetic number, because the mean of its divisors is an integer number (14916524544).

Almost surely, 2^345209346129 is an apocalyptic number.

It is an amenable number.

345209346129 is a deficient number, since it is larger than the sum of its proper divisors (132119439279).

345209346129 is a wasteful number, since it uses less digits than its factorization.

345209346129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20349.

The product of its (nonzero) digits is 1399680, while the sum is 48.

The spelling of 345209346129 in words is "three hundred forty-five billion, two hundred nine million, three hundred forty-six thousand, one hundred twenty-nine".