347688124721 has 4 divisors (see below), whose sum is σ = 397357856832. Its totient is φ = 298018392612.

The previous prime is 347688124699. The next prime is 347688124769. The reversal of 347688124721 is 127421886743.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 347688124721 - 2¹⁰ = 347688123697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (347688123721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24834866045 + ... + 24834866058.

It is an arithmetic number, because the mean of its divisors is an integer number (99339464208).

Almost surely, 2^347688124721 is an apocalyptic number.

It is an amenable number.

347688124721 is a deficient number, since it is larger than the sum of its proper divisors (49669732111).

347688124721 is an equidigital number, since it uses as much as digits as its factorization.

347688124721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49669732110.

The product of its digits is 3612672, while the sum is 53.

The spelling of 347688124721 in words is "three hundred forty-seven billion, six hundred eighty-eight million, one hundred twenty-four thousand, seven hundred twenty-one".