20335672905 has 8 divisors (see below), whose sum is σ = 32537076672. Its totient is φ = 10845692208.

The previous prime is 20335672883. The next prime is 20335672909. The reversal of 20335672905 is 50927653302.

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

It is not a de Polignac number, because 20335672905 - 2¹⁵ = 20335640137 is a prime.

It is a super-2 number, since 2×20335672905² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20335672909) 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, 677855749 + ... + 677855778.

It is an arithmetic number, because the mean of its divisors is an integer number (4067134584).

Almost surely, 2^20335672905 is an apocalyptic number.

It is an amenable number.

20335672905 is a deficient number, since it is larger than the sum of its proper divisors (12201403767).

20335672905 is a wasteful number, since it uses less digits than its factorization.

20335672905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1355711535.

The product of its (nonzero) digits is 340200, while the sum is 42.

The spelling of 20335672905 in words is "twenty billion, three hundred thirty-five million, six hundred seventy-two thousand, nine hundred five".