20740664231174 has 32 divisors (see below), whose sum is σ = 33193559916000. Its totient is φ = 9685500997120.

The previous prime is 20740664231171. The next prime is 20740664231197. The reversal of 20740664231174 is 47113246604702.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20740664231171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 206388212 + ... + 206488680.

It is an arithmetic number, because the mean of its divisors is an integer number (1037298747375).

Almost surely, 2^{20740664231174} is an apocalyptic number.

20740664231174 is a deficient number, since it is larger than the sum of its proper divisors (12452895684826).

20740664231174 is a wasteful number, since it uses less digits than its factorization.

20740664231174 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146968.

The product of its (nonzero) digits is 1354752, while the sum is 47.

The spelling of 20740664231174 in words is "twenty trillion, seven hundred forty billion, six hundred sixty-four million, two hundred thirty-one thousand, one hundred seventy-four".