20740044659 has 4 divisors (see below), whose sum is σ = 21960047304. Its totient is φ = 19520042016.

The previous prime is 20740044629. The next prime is 20740044683. The reversal of 20740044659 is 95644004702.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95644004702 = 2 ⋅47822002351.

It is a cyclic number.

It is not a de Polignac number, because 20740044659 - 2¹⁶ = 20739979123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20740044629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 610001297 + ... + 610001330.

It is an arithmetic number, because the mean of its divisors is an integer number (5490011826).

Almost surely, 2^20740044659 is an apocalyptic number.

20740044659 is a deficient number, since it is larger than the sum of its proper divisors (1220002645).

20740044659 is a wasteful number, since it uses less digits than its factorization.

20740044659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1220002644.

The product of its (nonzero) digits is 241920, while the sum is 41.

The spelling of 20740044659 in words is "twenty billion, seven hundred forty million, forty-four thousand, six hundred fifty-nine".