347026745721 has 4 divisors (see below), whose sum is σ = 462702327632. Its totient is φ = 231351163812.

The previous prime is 347026745713. The next prime is 347026745753. The reversal of 347026745721 is 127547620743.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 127547620743 = 3 ⋅42515873581.

It is not a de Polignac number, because 347026745721 - 2³ = 347026745713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (347026744721) 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, 57837790951 + ... + 57837790956.

It is an arithmetic number, because the mean of its divisors is an integer number (115675581908).

Almost surely, 2^347026745721 is an apocalyptic number.

It is an amenable number.

347026745721 is a deficient number, since it is larger than the sum of its proper divisors (115675581911).

347026745721 is a wasteful number, since it uses less digits than its factorization.

347026745721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115675581910.

The product of its (nonzero) digits is 1975680, while the sum is 48.

The spelling of 347026745721 in words is "three hundred forty-seven billion, twenty-six million, seven hundred forty-five thousand, seven hundred twenty-one".