20929733693 has 8 divisors (see below), whose sum is σ = 22932144480. Its totient is φ = 18943940880.

The previous prime is 20929733663. The next prime is 20929733711. The reversal of 20929733693 is 39633792902.

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

It is a cyclic number.

It is not a de Polignac number, because 20929733693 - 2⁸ = 20929733437 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 (20929733603) 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, 4151855 + ... + 4156892.

It is an arithmetic number, because the mean of its divisors is an integer number (2866518060).

Almost surely, 2^20929733693 is an apocalyptic number.

It is an amenable number.

20929733693 is a deficient number, since it is larger than the sum of its proper divisors (2002410787).

20929733693 is a wasteful number, since it uses less digits than its factorization.

20929733693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8308987.

The product of its (nonzero) digits is 3306744, while the sum is 53.

The spelling of 20929733693 in words is "twenty billion, nine hundred twenty-nine million, seven hundred thirty-three thousand, six hundred ninety-three".