347474072378 has 4 divisors (see below), whose sum is σ = 521211108570. Its totient is φ = 173737036188.

The previous prime is 347474072357. The next prime is 347474072419. The reversal of 347474072378 is 873270474743.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 873270474743 = 83 ⋅10521331021.

It can be written as a sum of positive squares in only one way, i.e., 344948306329 + 2525766049 = 587323^2 + 50257^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86868518093 + ... + 86868518096.

Almost surely, 2^347474072378 is an apocalyptic number.

347474072378 is a deficient number, since it is larger than the sum of its proper divisors (173737036192).

347474072378 is a wasteful number, since it uses less digits than its factorization.

347474072378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173737036191.

The product of its (nonzero) digits is 22127616, while the sum is 56.

The spelling of 347474072378 in words is "three hundred forty-seven billion, four hundred seventy-four million, seventy-two thousand, three hundred seventy-eight".