345181778439 has 8 divisors (see below), whose sum is σ = 460526653440. Its totient is φ = 229979044536.

The previous prime is 345181778423. The next prime is 345181778443. The reversal of 345181778439 is 934877181543.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 345181778439 - 2⁴ = 345181778423 is a prime.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345181778839) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35529607 + ... + 35539320.

It is an arithmetic number, because the mean of its divisors is an integer number (57565831680).

Almost surely, 2^345181778439 is an apocalyptic number.

345181778439 is a deficient number, since it is larger than the sum of its proper divisors (115344875001).

345181778439 is a wasteful number, since it uses less digits than its factorization.

345181778439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71070549.

The product of its digits is 20321280, while the sum is 60.

The spelling of 345181778439 in words is "three hundred forty-five billion, one hundred eighty-one million, seven hundred seventy-eight thousand, four hundred thirty-nine".