20665214607 has 8 divisors (see below), whose sum is σ = 27571075840. Its totient is φ = 13768081560.

The previous prime is 20665214579. The next prime is 20665214653. The reversal of 20665214607 is 70641256602.

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

It is not a de Polignac number, because 20665214607 - 2⁸ = 20665214351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20665224607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2176519 + ... + 2185992.

It is an arithmetic number, because the mean of its divisors is an integer number (3446384480).

Almost surely, 2^20665214607 is an apocalyptic number.

20665214607 is a deficient number, since it is larger than the sum of its proper divisors (6905861233).

20665214607 is a wasteful number, since it uses less digits than its factorization.

20665214607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4364093.

The product of its (nonzero) digits is 120960, while the sum is 39.

The spelling of 20665214607 in words is "twenty billion, six hundred sixty-five million, two hundred fourteen thousand, six hundred seven".