128347547643734 has 8 divisors (see below), whose sum is σ = 195677408702928. Its totient is φ = 63121744742760.

The previous prime is 128347547643643. The next prime is 128347547643773. The reversal of 128347547643734 is 437346745743821.

It is a happy number.

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

It is a congruent number.

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, 526014539402 + ... + 526014539645.

It is an arithmetic number, because the mean of its divisors is an integer number (24459676087866).

Almost surely, 2^{128347547643734} is an apocalyptic number.

128347547643734 is a deficient number, since it is larger than the sum of its proper divisors (67329861059194).

128347547643734 is a wasteful number, since it uses less digits than its factorization.

128347547643734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1052029079110.

The product of its digits is 1137991680, while the sum is 68.

The spelling of 128347547643734 in words is "one hundred twenty-eight trillion, three hundred forty-seven billion, five hundred forty-seven million, six hundred forty-three thousand, seven hundred thirty-four".