345161678138 has 8 divisors (see below), whose sum is σ = 517898803188. Its totient is φ = 172528743744.

The previous prime is 345161678123. The next prime is 345161678143. The reversal of 345161678138 is 831876161543.

It can be written as a sum of positive squares in 2 ways, for example, as 274153818409 + 71007859729 = 523597^2 + 266473^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 345161678138.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26039381 + ... + 26052632.

Almost surely, 2^345161678138 is an apocalyptic number.

345161678138 is a deficient number, since it is larger than the sum of its proper divisors (172737125050).

345161678138 is a wasteful number, since it uses less digits than its factorization.

345161678138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52095328.

The product of its digits is 2903040, while the sum is 53.

The spelling of 345161678138 in words is "three hundred forty-five billion, one hundred sixty-one million, six hundred seventy-eight thousand, one hundred thirty-eight".