346909725691 has 4 divisors (see below), whose sum is σ = 347081720632. Its totient is φ = 346737730752.

The previous prime is 346909725689. The next prime is 346909725713. The reversal of 346909725691 is 196527909643.

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 346909725691 - 2¹ = 346909725689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (346909725601) 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, 85994445 + ... + 85998478.

It is an arithmetic number, because the mean of its divisors is an integer number (86770430158).

Almost surely, 2^346909725691 is an apocalyptic number.

346909725691 is a deficient number, since it is larger than the sum of its proper divisors (171994941).

346909725691 is a wasteful number, since it uses less digits than its factorization.

346909725691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171994940.

The product of its (nonzero) digits is 22044960, while the sum is 61.

The spelling of 346909725691 in words is "three hundred forty-six billion, nine hundred nine million, seven hundred twenty-five thousand, six hundred ninety-one".