19694534947356 has 96 divisors (see below), whose sum is σ = 46172561476608. Its totient is φ = 6533705767680.

The previous prime is 19694534947349. The next prime is 19694534947379. The reversal of 19694534947356 is 65374943549691.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4369763655 + ... + 4369768161.

It is an arithmetic number, because the mean of its divisors is an integer number (480964182048).

Almost surely, 2^{19694534947356} is an apocalyptic number.

It is an amenable number.

19694534947356 is an abundant number, since it is smaller than the sum of its proper divisors (26478026529252).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19694534947356 is a wasteful number, since it uses less digits than its factorization.

19694534947356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6811 (or 6809 counting only the distinct ones).

The product of its digits is 2645395200, while the sum is 75.

The spelling of 19694534947356 in words is "nineteen trillion, six hundred ninety-four billion, five hundred thirty-four million, nine hundred forty-seven thousand, three hundred fifty-six".