20044729815 has 16 divisors (see below), whose sum is σ = 34987165056. Its totient is φ = 9718656800.

The previous prime is 20044729777. The next prime is 20044729823. The reversal of 20044729815 is 51892744002.

It is not a de Polignac number, because 20044729815 - 2¹⁰ = 20044728791 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60741441 + ... + 60741770.

It is an arithmetic number, because the mean of its divisors is an integer number (2186697816).

Almost surely, 2^20044729815 is an apocalyptic number.

20044729815 is a deficient number, since it is larger than the sum of its proper divisors (14942435241).

20044729815 is a wasteful number, since it uses less digits than its factorization.

20044729815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121483230.

The product of its (nonzero) digits is 161280, while the sum is 42.

The spelling of 20044729815 in words is "twenty billion, forty-four million, seven hundred twenty-nine thousand, eight hundred fifteen".