20866942740274 has 16 divisors (see below), whose sum is σ = 31677734303712. Its totient is φ = 10307699613568.

The previous prime is 20866942740233. The next prime is 20866942740307. The reversal of 20866942740274 is 47204724966802.

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, 33529602 + ... + 34146274.

It is an arithmetic number, because the mean of its divisors is an integer number (1979858393982).

Almost surely, 2^{20866942740274} is an apocalyptic number.

20866942740274 is a deficient number, since it is larger than the sum of its proper divisors (10810791563438).

20866942740274 is a wasteful number, since it uses less digits than its factorization.

20866942740274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820601.

The product of its (nonzero) digits is 65028096, while the sum is 61.

The spelling of 20866942740274 in words is "twenty trillion, eight hundred sixty-six billion, nine hundred forty-two million, seven hundred forty thousand, two hundred seventy-four".