346774173721 has 4 divisors (see below), whose sum is σ = 347086865700. Its totient is φ = 346461481744.

The previous prime is 346774173689. The next prime is 346774173727. The reversal of 346774173721 is 127371477643.

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 60614440000 + 286159733721 = 246200^2 + 534939^2 .

It is a cyclic number.

It is not a de Polignac number, because 346774173721 - 2⁵ = 346774173689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (346774173727) 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, 156344326 + ... + 156346543.

It is an arithmetic number, because the mean of its divisors is an integer number (86771716425).

Almost surely, 2^346774173721 is an apocalyptic number.

It is an amenable number.

346774173721 is a deficient number, since it is larger than the sum of its proper divisors (312691979).

346774173721 is a wasteful number, since it uses less digits than its factorization.

346774173721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312691978.

The product of its digits is 4148928, while the sum is 52.

The spelling of 346774173721 in words is "three hundred forty-six billion, seven hundred seventy-four million, one hundred seventy-three thousand, seven hundred twenty-one".