347790912257 has 4 divisors (see below), whose sum is σ = 356273617476. Its totient is φ = 339308207040.

The previous prime is 347790912241. The next prime is 347790912281. The reversal of 347790912257 is 752219097743.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 752219097743 = 389 ⋅1933725187.

It can be written as a sum of positive squares in 2 ways, for example, as 84202110976 + 263588801281 = 290176^2 + 513409^2 .

It is a cyclic number.

It is not a de Polignac number, because 347790912257 - 2⁴ = 347790912241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (347790912757) 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, 4241352548 + ... + 4241352629.

It is an arithmetic number, because the mean of its divisors is an integer number (89068404369).

Almost surely, 2^347790912257 is an apocalyptic number.

It is an amenable number.

347790912257 is a deficient number, since it is larger than the sum of its proper divisors (8482705219).

347790912257 is an equidigital number, since it uses as much as digits as its factorization.

347790912257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8482705218.

The product of its (nonzero) digits is 6667920, while the sum is 56.

The spelling of 347790912257 in words is "three hundred forty-seven billion, seven hundred ninety million, nine hundred twelve thousand, two hundred fifty-seven".