20039510161 has 8 divisors (see below), whose sum is σ = 21905100000. Its totient is φ = 18181223040.

The previous prime is 20039510143. The next prime is 20039510167. The reversal of 20039510161 is 16101593002.

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 20039510161 - 2²⁹ = 19502639249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20039510167) 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, 1819936 + ... + 1830913.

It is an arithmetic number, because the mean of its divisors is an integer number (2738137500).

Almost surely, 2^20039510161 is an apocalyptic number.

It is an amenable number.

20039510161 is a deficient number, since it is larger than the sum of its proper divisors (1865589839).

20039510161 is a wasteful number, since it uses less digits than its factorization.

20039510161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3651359.

The product of its (nonzero) digits is 1620, while the sum is 28.

The spelling of 20039510161 in words is "twenty billion, thirty-nine million, five hundred ten thousand, one hundred sixty-one".