20932664021691 has 8 divisors (see below), whose sum is σ = 27952960227600. Its totient is φ = 13933738581792.

The previous prime is 20932664021669. The next prime is 20932664021693. The reversal of 20932664021691 is 19612046623902.

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

It is not a de Polignac number, because 20932664021691 - 2²⁶ = 20932596912827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20932664021693) 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, 5342689216 + ... + 5342693133.

It is an arithmetic number, because the mean of its divisors is an integer number (3494120028450).

Almost surely, 2^{20932664021691} is an apocalyptic number.

20932664021691 is a deficient number, since it is larger than the sum of its proper divisors (7020296205909).

20932664021691 is a wasteful number, since it uses less digits than its factorization.

20932664021691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10685383005.

The product of its (nonzero) digits is 1679616, while the sum is 51.

The spelling of 20932664021691 in words is "twenty trillion, nine hundred thirty-two billion, six hundred sixty-four million, twenty-one thousand, six hundred ninety-one".