20729769998 has 64 divisors (see below), whose sum is σ = 37822464000. Its totient is φ = 8332398720.

The previous prime is 20729769997. The next prime is 20729770001. The reversal of 20729769998 is 89996792702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20729769997) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4317203 + ... + 4322001.

It is an arithmetic number, because the mean of its divisors is an integer number (590976000).

Almost surely, 2^20729769998 is an apocalyptic number.

20729769998 is a deficient number, since it is larger than the sum of its proper divisors (17092694002).

20729769998 is a wasteful number, since it uses less digits than its factorization.

20729769998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5145.

The product of its (nonzero) digits is 61725888, while the sum is 68.

The spelling of 20729769998 in words is "twenty billion, seven hundred twenty-nine million, seven hundred sixty-nine thousand, nine hundred ninety-eight".