19978834410334 has 8 divisors (see below), whose sum is σ = 29968540952688. Its totient is φ = 9989320759440.

The previous prime is 19978834410277. The next prime is 19978834410343. The reversal of 19978834410334 is 43301443887991.

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

It is a super-3 number, since 3×19978834410334³ (a number of 41 digits) contains 333 as substring.

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, 47963647 + ... + 48378394.

It is an arithmetic number, because the mean of its divisors is an integer number (3746067619086).

Almost surely, 2^{19978834410334} is an apocalyptic number.

19978834410334 is a deficient number, since it is larger than the sum of its proper divisors (9989706542354).

19978834410334 is a wasteful number, since it uses less digits than its factorization.

19978834410334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96445730.

The product of its (nonzero) digits is 62705664, while the sum is 64.

The spelling of 19978834410334 in words is "nineteen trillion, nine hundred seventy-eight billion, eight hundred thirty-four million, four hundred ten thousand, three hundred thirty-four".