20681293369378 has 8 divisors (see below), whose sum is σ = 31370501178540. Its totient is φ = 10224459643200.

The previous prime is 20681293369361. The next prime is 20681293369393. The reversal of 20681293369378 is 87396339218602.

It can be written as a sum of positive squares in 2 ways, for example, as 20147287576329 + 534005793049 = 4488573^2 + 730757^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58093520523 + ... + 58093520878.

Almost surely, 2^{20681293369378} is an apocalyptic number.

20681293369378 is a deficient number, since it is larger than the sum of its proper divisors (10689207809162).

20681293369378 is a wasteful number, since it uses less digits than its factorization.

20681293369378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116187041492.

The product of its (nonzero) digits is 141087744, while the sum is 67.

The spelling of 20681293369378 in words is "twenty trillion, six hundred eighty-one billion, two hundred ninety-three million, three hundred sixty-nine thousand, three hundred seventy-eight".