20719601169 has 16 divisors (see below), whose sum is σ = 28016904384. Its totient is φ = 13617849600.

The previous prime is 20719601153. The next prime is 20719601171. The reversal of 20719601169 is 96110691702.

It is not a de Polignac number, because 20719601169 - 2⁴ = 20719601153 is a prime.

It is a super-2 number, since 2×20719601169² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20719601169.

It is not an unprimeable number, because it can be changed into a prime (20719601069) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 508389 + ... + 547629.

It is an arithmetic number, because the mean of its divisors is an integer number (1751056524).

Almost surely, 2^20719601169 is an apocalyptic number.

It is an amenable number.

20719601169 is a deficient number, since it is larger than the sum of its proper divisors (7297303215).

20719601169 is a wasteful number, since it uses less digits than its factorization.

20719601169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41728.

The product of its (nonzero) digits is 40824, while the sum is 42.

The spelling of 20719601169 in words is "twenty billion, seven hundred nineteen million, six hundred one thousand, one hundred sixty-nine".