345400678238 has 16 divisors (see below), whose sum is σ = 645944125824. Its totient is φ = 134571692760.

The previous prime is 345400678219. The next prime is 345400678241. The reversal of 345400678238 is 832876004543.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1121430620 + ... + 1121430927.

It is an arithmetic number, because the mean of its divisors is an integer number (40371507864).

Almost surely, 2^345400678238 is an apocalyptic number.

345400678238 is a deficient number, since it is larger than the sum of its proper divisors (300543447586).

345400678238 is a wasteful number, since it uses less digits than its factorization.

345400678238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2242861567.

The product of its (nonzero) digits is 3870720, while the sum is 50.

The spelling of 345400678238 in words is "three hundred forty-five billion, four hundred million, six hundred seventy-eight thousand, two hundred thirty-eight".