20683781742274 has 16 divisors (see below), whose sum is σ = 35460626249088. Its totient is φ = 8863799216832.

The previous prime is 20683781742263. The next prime is 20683781742287. The reversal of 20683781742274 is 47224718738602.

It is a happy 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, 56366647 + ... + 56732410.

It is an arithmetic number, because the mean of its divisors is an integer number (2216289140568).

Almost surely, 2^{20683781742274} is an apocalyptic number.

20683781742274 is a deficient number, since it is larger than the sum of its proper divisors (14776844506814).

20683781742274 is a wasteful number, since it uses less digits than its factorization.

20683781742274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113112129.

The product of its (nonzero) digits is 50577408, while the sum is 61.

The spelling of 20683781742274 in words is "twenty trillion, six hundred eighty-three billion, seven hundred eighty-one million, seven hundred forty-two thousand, two hundred seventy-four".